Review
Copyright ©The Author(s) 2018.
World J Gastroenterol. Jul 28, 2018; 24(28): 3055-3070
Published online Jul 28, 2018. doi: 10.3748/wjg.v24.i28.3055
Figure 1
Figure 1 Ovid MEDLINE literature search strategy. Similar searches were run within EMBASE: Excerpta Medica and EMBASE: Classic, PubMed, and PsychINFO databases.
Figure 2
Figure 2 Ovid MEDLINE literature search results. After initial search and limitations, results were further screened by a single expert reviewer.
Figure 3
Figure 3 EMBASE: Excerpta Medica and EMBASE: Classic literature search results. After initial search and limitations, results above and beyond those already identified via Ovid MEDLINE search were further screened by a single expert reviewer.