Fig. 1

Flow chart of the study search, selection, and inclusion. Example of search equation: emergency[Title/Abstract]) OR emergency surgery[Title/Abstract]) OR urgent surgery[Title/Abstract]) OR appendicitis[Title/Abstract]) OR diverticulitis[Title/Abstract]) OR perforation[Title/Abstract]) OR cholecystectomy[Title/Abstract]) OR colectomy[Title/Abstract]) OR appendectomy[Title/Abstract]) OR cholecystitis[Title/Abstract]) AND Humans[Mesh] AND English[lang] AND adult[MeSH]) AND (((((transplant[Title/Abstract]) OR transplantation[Title/Abstract]) OR solid organ transplantation[Title/Abstract]) OR transplant patient[Title/Abstract]) OR transplanted patient[Title/Abstract])