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For: Park IJ, Choi GS, Kang BM, Lim KH, Jun SH. Lymph node metastasis patterns in right-sided colon cancers: is segmental resection of these tumors oncologically safe? Ann Surg Oncol. 2009;16:1501-1506. [PMID: 19252953 DOI: 10.1245/s10434-009-0368-x] [Cited by in Crossref: 59] [Cited by in F6Publishing: 53] [Article Influence: 4.5] [Reference Citation Analysis]
Number Citing Articles
1 An MS, Baik H, Oh SH, Park YH, Seo SH, Kim KH, Hong KH, Bae KB. Oncological outcomes of complete vs conventional mesocolic excision in laparoscopic right hemicolectomy. ANZ J Surg. 2018;88:E698-E702. [PMID: 29895094 DOI: 10.1111/ans.14493] [Cited by in Crossref: 23] [Cited by in F6Publishing: 18] [Article Influence: 5.8] [Reference Citation Analysis]
2 Cotte E, Glehen O. Lymphadenectomy for Colon Cancer: Is There a Consensus? Ann Surg Oncol 2009;16:1454-5. [DOI: 10.1245/s10434-009-0434-4] [Cited by in Crossref: 3] [Cited by in F6Publishing: 2] [Article Influence: 0.2] [Reference Citation Analysis]
3 Woo IT, Park JS, Kang BW, Park SY, Kim HJ, Choi GS, Gwang Kim J. Impact of Anatomic Extent of Nodal Metastasis on Adjuvant Chemotherapy Outcomes in Stage III Colon Cancer. Dis Colon Rectum 2020;63:1455-65. [PMID: 32969889 DOI: 10.1097/DCR.0000000000001790] [Reference Citation Analysis]
4 Matsuda T, Iwasaki T, Mitsutsuji M, Hirata K, Maekawa Y, Tanaka T, Shimada E, Kakeji Y. Cranial-to-caudal approach for radical lymph node dissection along the surgical trunk in laparoscopic right hemicolectomy. Surg Endosc. 2015;29:1001. [PMID: 25135445 DOI: 10.1007/s00464-014-3761-x] [Cited by in Crossref: 21] [Cited by in F6Publishing: 14] [Article Influence: 2.6] [Reference Citation Analysis]
5 Kaye TL, West NP, Jayne DG, Tolan DJ. CT assessment of right colonic arterial anatomy pre and post cancer resection - a potential marker for quality and extent of surgery? Acta Radiol. 2016;57:394-400. [PMID: 25940063 DOI: 10.1177/0284185115583033] [Cited by in Crossref: 11] [Cited by in F6Publishing: 9] [Article Influence: 1.6] [Reference Citation Analysis]
6 Park SY, Park JS, Kim HJ, Woo IT, Park IK, Choi GS. Indocyanine Green Fluorescence Imaging-Guided Laparoscopic Surgery Could Achieve Radical D3 Dissection in Patients With Advanced Right-Sided Colon Cancer.Dis Colon Rectum. 2020;63:441-449. [PMID: 31996582 DOI: 10.1097/DCR.0000000000001597] [Cited by in Crossref: 6] [Cited by in F6Publishing: 3] [Article Influence: 3.0] [Reference Citation Analysis]
7 Olofsson F, Buchwald P, Elmståhl S, Syk I. Wide excision in right-sided colon cancer is associated with decreased survival. Scand J Surg 2013;102:241-5. [PMID: 24056139 DOI: 10.1177/1457496913489085] [Cited by in Crossref: 6] [Cited by in F6Publishing: 6] [Article Influence: 0.7] [Reference Citation Analysis]
8 Spasojevic M, Stimec BV, Gronvold LB, Nesgaard JM, Edwin B, Ignjatovic D. The anatomical and surgical consequences of right colectomy for cancer. Dis Colon Rectum. 2011;54:1503-1509. [PMID: 22067178 DOI: 10.1097/dcr.0b013e318232116b] [Cited by in Crossref: 30] [Cited by in F6Publishing: 10] [Article Influence: 2.7] [Reference Citation Analysis]
9 Søndenaa K, Quirke P, Hohenberger W, Sugihara K, Kobayashi H, Kessler H, Brown G, Tudyka V, D’Hoore A, Kennedy RH. The rationale behind complete mesocolic excision (CME) and a central vascular ligation for colon cancer in open and laparoscopic surgery : proceedings of a consensus conference. Int J Colorectal Dis. 2014;29:419-428. [PMID: 24477788 DOI: 10.1007/s00384-013-1818-2] [Cited by in Crossref: 116] [Cited by in F6Publishing: 94] [Article Influence: 14.5] [Reference Citation Analysis]
10 Bertelsen CA, Kirkegaard-klitbo A, Nielsen M, Leotta SMG, Daisuke F, Gögenur I. Pattern of Colon Cancer Lymph Node Metastases in Patients Undergoing Central Mesocolic Lymph Node Excision: A Systematic Review. Diseases of the Colon & Rectum 2016;59:1209-21. [DOI: 10.1097/dcr.0000000000000658] [Cited by in Crossref: 49] [Cited by in F6Publishing: 14] [Article Influence: 8.2] [Reference Citation Analysis]
11 Testa DC, Mazzola L, di Martino G, Cotellese R, Selvaggi F. Laparoscopic and open complete mesocolic excision with central vascular ligation for right colonic adenocarcinoma: a retrospective comparative study. ANZ J Surg 2021. [PMID: 34636465 DOI: 10.1111/ans.17264] [Reference Citation Analysis]
12 Isik O, Gorgun E. How Has the Robot Contributed to Colon Cancer Surgery? Clin Colon Rectal Surg 2015;28:220-7. [PMID: 26648792 DOI: 10.1055/s-0035-1564436] [Cited by in Crossref: 11] [Cited by in F6Publishing: 7] [Article Influence: 1.6] [Reference Citation Analysis]
13 Pedrazzani C, Lauka L, Sforza S, Ruzzenente A, Nifosì F, Delaini G, Guglielmi A. Management of nodal disease from colon cancer in the laparoscopic era. Int J Colorectal Dis. 2015;30:303-314. [PMID: 25416529 DOI: 10.1007/s00384-014-2075-8] [Cited by in Crossref: 11] [Cited by in F6Publishing: 11] [Article Influence: 1.4] [Reference Citation Analysis]
14 Chow CFK, Kim SH. Laparoscopic complete mesocolic excision: West meets East. World J Gastroenterol 2014; 20(39): 14301-14307 [PMID: 25339817 DOI: 10.3748/wjg.v20.i39.14301] [Cited by in CrossRef: 31] [Cited by in F6Publishing: 25] [Article Influence: 3.9] [Reference Citation Analysis]
15 Matsuda T, Sumi Y, Yamashita K, Hasegawa H, Yamamoto M, Matsuda Y, Kanaji S, Oshikiri T, Nakamura T, Suzuki S, Kakeji Y. Optimal Surgery for Mid-Transverse Colon Cancer: Laparoscopic Extended Right Hemicolectomy Versus Laparoscopic Transverse Colectomy. World J Surg 2018;42:3398-404. [PMID: 29610931 DOI: 10.1007/s00268-018-4612-z] [Cited by in Crossref: 13] [Cited by in F6Publishing: 9] [Article Influence: 3.3] [Reference Citation Analysis]
16 Park JS, Choi GS, Park SY, Kim HJ, Ryuk JP. Randomized clinical trial of robot-assisted versus standard laparoscopic right colectomy. Br J Surg. 2012;99:1219-1226. [PMID: 22864881 DOI: 10.1002/bjs.8841] [Cited by in Crossref: 217] [Cited by in F6Publishing: 167] [Article Influence: 21.7] [Reference Citation Analysis]
17 Lee H, Chudner A, Gachabayov M, Dyatlov A, Bergamaschi R. Right colectomy: a New York state of mind. Minerva Chir 2019;74:160-4. [PMID: 30037174 DOI: 10.23736/S0026-4733.18.07693-9] [Cited by in Crossref: 1] [Article Influence: 0.3] [Reference Citation Analysis]
18 De Simoni O, Barina A, Sommariva A, Tonello M, Gruppo M, Mattara G, Toniato A, Pilati P, Franzato B. Complete mesocolic excision vs conventional hemicolectomy in patients with right colon cancer: a systematic review and meta-analysis. Int J Colorectal Dis. 2021;36:881-892. [PMID: 33170319 DOI: 10.1007/s00384-020-03797-3] [Cited by in Crossref: 11] [Cited by in F6Publishing: 8] [Article Influence: 5.5] [Reference Citation Analysis]
19 Roy MK, Pipara A, Kumar A. Surgical management of adenocarcinoma of the transverse colon: What should be the extent of resection? Ann Gastroenterol Surg 2021;5:24-31. [PMID: 33532677 DOI: 10.1002/ags3.12380] [Reference Citation Analysis]
20 Park HM, Lee J, Lee SY, Kim CH, Kim HR. Distribution of lymph node metastasis and oncological outcomes of mid-transverse colon cancer: extended versus transverse colectomy. Colorectal Dis 2021;23:2007-13. [PMID: 33793058 DOI: 10.1111/codi.15659] [Cited by in Crossref: 4] [Cited by in F6Publishing: 1] [Article Influence: 4.0] [Reference Citation Analysis]
21 Kim HJ, Choi GS. Clinical Implications of Lymph Node Metastasis in Colorectal Cancer: Current Status and Future Perspectives. Ann Coloproctol 2019;35:109-17. [PMID: 31288500 DOI: 10.3393/ac.2019.06.12] [Cited by in Crossref: 13] [Cited by in F6Publishing: 11] [Article Influence: 4.3] [Reference Citation Analysis]
22 Mathis KL, Cima RR. Quality Assurance in Colon and Rectal Cancer Surgery. Surgical Oncology Clinics of North America 2014;23:11-23. [DOI: 10.1016/j.soc.2013.09.002] [Cited by in Crossref: 4] [Cited by in F6Publishing: 4] [Article Influence: 0.5] [Reference Citation Analysis]
23 Kim NK, Kim YW, Han YD, Cho MS, Hur H, Min BS, Lee KY. Complete mesocolic excision and central vascular ligation for colon cancer: Principle, anatomy, surgical technique, and outcomes. Surg Oncol. 2016;25:252-262. [PMID: 27566031 DOI: 10.1016/j.suronc.2016.05.009] [Cited by in Crossref: 52] [Cited by in F6Publishing: 39] [Article Influence: 8.7] [Reference Citation Analysis]
24 Koh FH, Tan KK. Complete mesocolic excision for colon cancer: is it worth it?J Gastrointest Oncol. 2019;10:1215-1221. [PMID: 31949942 DOI: 10.21037/jgo.2019.05.01] [Cited by in Crossref: 10] [Cited by in F6Publishing: 7] [Article Influence: 3.3] [Reference Citation Analysis]
25 Andrew H, Gossedge G, Croft J, Corrigan N, Brown JM, West N, Quirke P, Tolan D, Cahill R, Jayne DG. Next Generation intraoperative Lymph node staging for Stratified colon cancer surgery (GLiSten): a multicentre, multinational feasibility study of fluorescence in predicting lymph node-positive disease. Efficacy Mech Eval 2016;3:1-122. [DOI: 10.3310/eme03060] [Cited by in Crossref: 1] [Article Influence: 0.2] [Reference Citation Analysis]
26 Kim CH, Huh JW, Kim HR, Kim YJ. Prognostic Comparison Between Number and Distribution of Lymph Node Metastases in Patients with Right-Sided Colon Cancer. Ann Surg Oncol 2014;21:1361-8. [DOI: 10.1245/s10434-013-3426-3] [Cited by in Crossref: 24] [Cited by in F6Publishing: 24] [Article Influence: 2.7] [Reference Citation Analysis]
27 He JJ, Sun FF, Xiao Q, Ding KF. Laparoscopic ileocecal-sparing right hemicolectomy (LISH) for cancers of the hepatic flexure or proximal transverse colon: a video vignette. Tech Coloproctol 2021;25:891-2. [PMID: 33683502 DOI: 10.1007/s10151-021-02425-8] [Reference Citation Analysis]
28 Suzuki S, Nagasaki T, Akiyoshi T, Konishi T, Fujimoto Y, Nagayama S, Fukunaga Y, Fukuoka H, Ushigome H, Murahashi S, Miyanari S, Minami H, Ueno M. Laparoscopic right hemicolectomy for a colon cancer patient with an ileal conduit. Asian J Endosc Surg 2019;12:114-7. [PMID: 29624907 DOI: 10.1111/ases.12486] [Reference Citation Analysis]
29 Karachun A, Panaiotti L, Chernikovskiy I, Achkasov S, Gevorkyan Y, Savanovich N, Sharygin G, Markushin L, Sushkov O, Aleshin D, Shakhmatov D, Nazarov I, Muratov I, Maynovskaya O, Olkina A, Lankov T, Ovchinnikova T, Kharagezov D, Kaymakchi D, Milakin A, Petrov A. Short-term outcomes of a multicentre randomized clinical trial comparing D2 versus D3 lymph node dissection for colonic cancer (COLD trial). Br J Surg 2020;107:499-508. [PMID: 31872869 DOI: 10.1002/bjs.11387] [Cited by in Crossref: 12] [Cited by in F6Publishing: 7] [Article Influence: 4.0] [Reference Citation Analysis]
30 Ramachandra C, Sugoor P, Karjol U, Arjunan R, Altaf S, Patil V, Kumar H, Beesanna G, Abhishek M. Robotic Complete Mesocolic Excision with Central Vascular Ligation for Right Colon Cancer: Surgical Technique and Short-term Outcomes. Indian J Surg Oncol 2020;11:674-83. [PMID: 33281407 DOI: 10.1007/s13193-020-01181-9] [Cited by in Crossref: 1] [Cited by in F6Publishing: 1] [Article Influence: 0.5] [Reference Citation Analysis]
31 Murphy J, Young-fadok T. Extended Lymphadenectomy in Colon Cancer Is Debatable. World J Surg 2013;37:1799-807. [DOI: 10.1007/s00268-013-2071-0] [Cited by in Crossref: 4] [Cited by in F6Publishing: 5] [Article Influence: 0.4] [Reference Citation Analysis]
32 Ishiyama Y, Maeda C, Shimada S, Kudo SE. Propensity-score-matched analysis of short- and long-term outcomes in patients with an ileocolic artery crossing anterior vs posterior to the superior mesenteric vein during curative resection for right-sided colon cancer. Surg Endosc 2020;34:5384-92. [PMID: 31993811 DOI: 10.1007/s00464-019-07333-5] [Cited by in Crossref: 3] [Cited by in F6Publishing: 2] [Article Influence: 1.5] [Reference Citation Analysis]
33 Ong MLH, Schofield JB. Assessment of lymph node involvement in colorectal cancer. World J Gastrointest Surg 2016; 8(3): 179-192 [PMID: 27022445 DOI: 10.4240/wjgs.v8.i3.179] [Cited by in CrossRef: 47] [Cited by in F6Publishing: 39] [Article Influence: 7.8] [Reference Citation Analysis]
34 Ichikawa N, Homma S, Yoshida T, Emoto S, Imaizumi K, Miyaoka Y, Matsui H, Taketomi A. Modified complete mesocolic excision with central vascular ligation by the squeezing approach in laparoscopic right colectomy. Langenbecks Arch Surg 2021. [PMID: 34254164 DOI: 10.1007/s00423-021-02267-w] [Reference Citation Analysis]
35 Pedrazzani C, Lazzarini E, Turri G, Fernandes E, Conti C, Tombolan V, Nifosì F, Guglielmi A. Laparoscopic Complete Mesocolic Excision for Right-Sided Colon Cancer: Analysis of Feasibility and Safety from a Single Western Center. J Gastrointest Surg 2019;23:402-7. [PMID: 30430433 DOI: 10.1007/s11605-018-4040-2] [Cited by in Crossref: 3] [Cited by in F6Publishing: 3] [Article Influence: 0.8] [Reference Citation Analysis]
36 Zhao J, Zhu J, Sun R, Huang C, Yuan R, Zhu Z. Primary tumor resection improves prognosis of unresectable carcinomas of the transverse colon including flexures with liver metastasis: a preliminary population-based analysis. BMC Cancer 2021;21:503. [PMID: 33957871 DOI: 10.1186/s12885-021-08157-0] [Reference Citation Analysis]
37 Shin JW, Amar AH, Kim SH, Kwak JM, Baek SJ, Cho JS, Kim J. Complete mesocolic excision with D3 Lymph node dissection in laparoscopic colectomy for stages II and III colon cancer: long-term oncologic outcomes in 168 patients. Tech Coloproctol. 2014;18:795-803. [PMID: 24633427 DOI: 10.1007/s10151-014-1134-z] [Cited by in Crossref: 32] [Cited by in F6Publishing: 31] [Article Influence: 4.0] [Reference Citation Analysis]
38 Lee SY, Yeom SS, Kim CH, Kim YJ, Kim HR. Distribution of lymph node metastasis and the extent of lymph node dissection in descending colon cancer patients. ANZ J Surg 2019;89:E373-8. [PMID: 31452333 DOI: 10.1111/ans.15400] [Cited by in Crossref: 4] [Article Influence: 1.3] [Reference Citation Analysis]
39 Buczacki SJ, Davies RJ. Colon resection: is standard technique adequate? Surg Oncol Clin N Am. 2014;23:25-34. [PMID: 24267163 DOI: 10.1016/j.soc.2013.09.003] [Cited by in Crossref: 3] [Cited by in F6Publishing: 3] [Article Influence: 0.3] [Reference Citation Analysis]
40 Petz W, Bertani E, Borin S, Fiori G, Ribero D, Spinoglio G. Fluorescence-guided D3 lymphadenectomy in robotic right colectomy with complete mesocolic excision. Int J Med Robot 2021;17:e2217. [PMID: 33372413 DOI: 10.1002/rcs.2217] [Cited by in Crossref: 1] [Cited by in F6Publishing: 1] [Article Influence: 1.0] [Reference Citation Analysis]
41 Guan X, Zhao Z, Yang M, Chen H, Chen W, Liu Z, Jiang Z, Chen Y, Wang G, Wang X. Whether partial colectomy is oncologically safe for patients with transverse colon cancer: a large population-based study. Oncotarget 2017;8:93236-44. [PMID: 29190993 DOI: 10.18632/oncotarget.21275] [Cited by in Crossref: 8] [Cited by in F6Publishing: 6] [Article Influence: 1.6] [Reference Citation Analysis]
42 Funada T, Yamazaki S, Kochi M, Takayama T. Impact of anatomical versus non-anatomical resection for stage II and III colon cancer. Eur Surg 2018;50:183-8. [DOI: 10.1007/s10353-018-0523-3] [Reference Citation Analysis]
43 Jung KU, Park Y, Lee KY, Sohn SK. Robotic transverse colectomy for mid-transverse colon cancer: surgical techniques and oncologic outcomes. J Robot Surg. 2015;9:131-136. [PMID: 26531113 DOI: 10.1007/s11701-015-0502-7] [Cited by in Crossref: 7] [Cited by in F6Publishing: 5] [Article Influence: 1.0] [Reference Citation Analysis]
44 Munkedal DLE, Rosenkilde M, Nielsen DT, Sommer T, West NP, Laurberg S. Radiological and pathological evaluation of the level of arterial division after colon cancer surgery. Colorectal Dis. 2017;19:O238-O245. [PMID: 28590033 DOI: 10.1111/codi.13756] [Cited by in Crossref: 13] [Cited by in F6Publishing: 13] [Article Influence: 3.3] [Reference Citation Analysis]
45 Spasojevic M, Stimec BV, Fasel JF, Terraz S, Ignjatovic D. 3D relations between right colon arteries and the superior mesenteric vein: a preliminary study with multidetector computed tomography. Surg Endosc. 2011;25:1883-1886. [PMID: 21136104 DOI: 10.1007/s00464-010-1480-5] [Cited by in Crossref: 36] [Cited by in F6Publishing: 34] [Article Influence: 3.0] [Reference Citation Analysis]
46 Alsabilah J, Kim WR, Kim NK. Vascular Structures of the Right Colon: Incidence and Variations with Their Clinical Implications. Scand J Surg 2017;106:107-15. [PMID: 27215222 DOI: 10.1177/1457496916650999] [Cited by in Crossref: 25] [Cited by in F6Publishing: 20] [Article Influence: 4.2] [Reference Citation Analysis]
47 Lan Y, Lin J, Jiang J, Chang S, Liang W, Yang S. Significance of Lymph Node Retrieval From the Terminal Ileum for Patients With Cecal and Ascending Colonic Cancers. Ann Surg Oncol 2011;18:146-52. [DOI: 10.1245/s10434-010-1270-2] [Cited by in Crossref: 15] [Cited by in F6Publishing: 12] [Article Influence: 1.3] [Reference Citation Analysis]
48 Yi XJ, Lu XQ, Li HM, Wang W, Xiong WJ, Wan J, Diao DC. Feasibility and efficacy of laparoscopic radical right hemicolectomy with complete mesocolic excision using an 'artery-first' approach. Gastroenterol Rep (Oxf) 2019;7:199-204. [PMID: 31217984 DOI: 10.1093/gastro/goy047] [Cited by in Crossref: 2] [Article Influence: 0.7] [Reference Citation Analysis]
49 Luca F, Ghezzi TL, Valvo M, Cenciarelli S, Pozzi S, Radice D, Crosta C, Biffi R. Surgical and pathological outcomes after right hemicolectomy: case-matched study comparing robotic and open surgery. Int J Med Robot 2011;7:298-303. [PMID: 21563286 DOI: 10.1002/rcs.398] [Cited by in Crossref: 9] [Cited by in F6Publishing: 12] [Article Influence: 0.8] [Reference Citation Analysis]
50 Negoi I, Beuran M, Hostiuc S, Negoi RI, Inoue Y. Surgical Anatomy of the Superior Mesenteric Vessels Related to Colon and Pancreatic Surgery: A Systematic Review and Meta-Analysis. Sci Rep. 2018;8:4184. [PMID: 29520096 DOI: 10.1038/s41598-018-22641-x] [Cited by in Crossref: 31] [Cited by in F6Publishing: 19] [Article Influence: 7.8] [Reference Citation Analysis]
51 Munkedal DL, West NP, Iversen LH, Hagemann-Madsen R, Quirke P, Laurberg S. Implementation of complete mesocolic excision at a university hospital in Denmark: An audit of consecutive, prospectively collected colon cancer specimens. Eur J Surg Oncol. 2014;40:1494-1501. [PMID: 24947074 DOI: 10.1016/j.ejso.2014.04.004] [Cited by in Crossref: 18] [Cited by in F6Publishing: 18] [Article Influence: 2.3] [Reference Citation Analysis]
52 Zhao J, Zhu J, Huang C, Yuan R, Zhu Z. Impact of primary tumor resection on the survival of patients with unresectable colon cancer liver metastasis at different colonic subsites: a propensity score matching analysis. Acta Chir Belg 2021;:1-16. [PMID: 34278951 DOI: 10.1080/00015458.2021.1956799] [Reference Citation Analysis]
53 Kessler H, Hohenberger W. Extended lymphadenectomy in colon cancer is crucial. World J Surg 2013;37:1789-98. [PMID: 23754141 DOI: 10.1007/s00268-013-2130-6] [Cited by in Crossref: 26] [Cited by in F6Publishing: 24] [Article Influence: 3.3] [Reference Citation Analysis]
54 Soares AS, Lovat LB, Chand M. Intracorporeal lymph node mapping in colon cancer surgery. Eur J Surg Oncol 2019;45:2316-8. [PMID: 31353062 DOI: 10.1016/j.ejso.2019.07.013] [Cited by in Crossref: 2] [Cited by in F6Publishing: 2] [Article Influence: 0.7] [Reference Citation Analysis]
55 Siebert M, Trilling B, Lamotte A, Taton N, Bellier A, Faucheron JL. Similar length of colon is removed regardless of localization in right-sided colonic cancer surgery. ANZ J Surg 2018;88:E568-72. [PMID: 29219230 DOI: 10.1111/ans.14276] [Reference Citation Analysis]
56 Xu L, Su X, He Z, Zhang C, Lu J, Zhang G, Sun Y, Du X, Chi P, Wang Z, Zhong M, Wu A, Zhu A, Li F, Xu J, Kang L, Suo J, Deng H, Ye Y, Ding K, Xu T, Zhang Z, Zheng M, Xiao Y; RELARC Study Group. Short-term outcomes of complete mesocolic excision versus D2 dissection in patients undergoing laparoscopic colectomy for right colon cancer (RELARC): a randomised, controlled, phase 3, superiority trial. Lancet Oncol 2021;22:391-401. [PMID: 33587893 DOI: 10.1016/S1470-2045(20)30685-9] [Cited by in Crossref: 9] [Cited by in F6Publishing: 2] [Article Influence: 9.0] [Reference Citation Analysis]