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Publication Name
World Journal of Gastroenterology
ISSN
1007-9327
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Baishideng Publishing Group Inc, 7041 Koll Center Parkway, Suite 160, Pleasanton, CA 94566, USA

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©The Author(s) 2021.
World J Gastroenterol. Mar 7, 2021; 27(9): 886-907
Published online Mar 7, 2021. doi: 10.3748/wjg.v27.i9.886
Table 3 Quality of articles
Ref.
Item 1
Item 2
Item 3
Item 4
Item 5
Item 6
Chaparro et al[12], 2018★★
Ungar et al[28], 2016★★
Yarur et al[29], 2016★★★
Roblin et al[26], 2014★★
Morita et al[18], 2016★★★
Morita et al[19], 2016★★★
Strik et al[27], 2019★★★
Plevris et al[24], 2020★★★
Zittan et al[30], 2016★★★
Juncadella et al[16], 2018★★★
Papamichael et al[23], 2016★★★★
Papamichael et al[20], 2017★★★★
Papamichael et al[22], 2018★★★
Feng et al[14], 2019★★★★
Papamichael et al[21], 2018★★★
Dreesen et al[31], 2020★★★★★★
Imaeda et al[15], 2014★★★
EI-Matary et al[32], 2019★★★★★★
Kang et al[17], 2019★★
Hanzel et al[33], 2019★★★★★★
Dreesen et al[13], 2018★★★
Pouillon et al[25], 2019★★★
Yacoub et al[34], 2018★★★★★★
Item 1: The representativeness of the exposed cohorts; Item 2: Identification of exposure; Item 3: The verification of concerned results absent in the start of study; Item 4: The sufficient evaluation of study results; Item 5: Follow-up is long enough after study results take place; and Item 6: Follow-up of cohorts is long enough. ★: Contents of the literature in line with the item.
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