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Open-Access Journal
Review
Maria Michela Chiarello, Gilda Pepe, Valeria Fico, Valentina Bianchi, Giuseppe Tropeano, Gaia Altieri, Giuseppe Brisinda 
World J Gastroenterol 28(18):1902-1921. Published online May 14, 2022. doi: 10.3748/wjg.v28.i18.1902
Minireviews
Farah Yasmin, Hala Najeeb, Shehryar Shaikh, Muhammad Hasanain, Unaiza Naeem, Abdul Moeed, Thoyaja Koritala, Syedadeel Hasan, Salim Surani 
World J Gastroenterol 28(18):1922-1933. Published online May 14, 2022. doi: 10.3748/wjg.v28.i18.1922
Basic Study
Simone Baldi, Giuditta Pagliai, Monica Dinu, Leandro Di Gloria, Giulia Nannini, Lavinia Curini, Marco Pallecchi, Edda Russo, Elena Niccolai, Giovanna Danza, Stefano Benedettelli, Giovanna Ballerini, Barbara Colombini, Gianluca Bartolucci, Matteo Ramazzotti, Francesco Sofi, Amedeo Amedei 
World J Gastroenterol 28(18):1965-1980. Published online May 14, 2022. doi: 10.3748/wjg.v28.i18.1965
Retrospective Cohort Study
Moath Alarabiyat, Syed Soulat Raza, John Isaac, Darius Mirza, Ravi Marudanayagam, Keith Roberts, Manuel Abradelo, David C Bartlett, Bobby V Dasari, Robert P Sutcliffe, Nikolaos A Chatzizacharias 
World J Gastroenterol 28(18):1996-2007. Published online May 14, 2022. doi: 10.3748/wjg.v28.i18.1996
Retrospective Study
Observational Study