Copyright: ©Author(s) 2026.
World J Gastrointest Endosc. Jun 16, 2026; 18(6): 121737
Published online Jun 16, 2026. doi: 10.4253/wjge.v18.i6.121737
Published online Jun 16, 2026. doi: 10.4253/wjge.v18.i6.121737
Table 1 Characteristics of the included studies
| Ref. | Study design | Country | Study type | Enrollment period |
| Kahaleh et al[23] | Retrospective | United States | Monocentric | 2001-2003 |
| Weston et al[24] | Retrospective | United States | Monocentric | 2002-2005 |
| Weston et al[25] | Retrospective | United States | Monocentric | 2006-2007 |
| Cabral et al[26] | Retrospective | Brazil | Monocentric | 2015 |
| Pausawasdi et al[27] | Retrospective | Thailand | Monocentric | 2007-2017 |
| Mikalsen et al[28] | Retrospective | Norway | Monocentric | 2015-2021 |
| Naidu et al[29] | Prospective | India | Monocentric | 2023-2024 |
| Martínez-Moreno et al[30] | Retrospective | Spain | Multicentric | 2016-2024 |
| Chieng et al[31] | Retrospective | New Zealand | Multicentric | 2017-2023 |
- Citation: Martino A, Granata A, Zito FP, Lombardi M, Fiorentino R, Carrubba C, Orsini L, Niola R, Riccardi F, Galloro G, Molino C, Lombardi G. Endoscopic biliary drainage techniques for bilirubin normalization in distal malignant biliary obstruction: A comprehensive review. World J Gastrointest Endosc 2026; 18(6): 121737
- URL: https://www.wjgnet.com/1948-5190/full/v18/i6/121737.htm
- DOI: https://dx.doi.org/10.4253/wjge.v18.i6.121737