The Turkish Journal of Gastroenterology is an open access publication, and the journal’s publication model is based on Budapest Open Access Initiative (BOAI) declaration. All published content is available online, free of charge at www.turkjgastroenterol.org. Authors retain the copyright of their published work in The Turkish Journal of Gastroenterology. The journal’s content is licensed under a Creative Commons Attribution (CC BY) 4.0 International License which permits third parties to share and adapt the content for any purpose by giving the apropriate credit to the original work.