Systematic Reviews
Copyright ©The Author(s) 2017.
World J Gastrointest Surg. May 27, 2017; 9(5): 127-138
Published online May 27, 2017. doi: 10.4240/wjgs.v9.i5.127
Table 2 Document type distribution in four data-bases
Document typeWoSBIOSISMEDLINEScopus
Journal article8707001057970
Review6338118114
Congress proceedings576139
Meeting abstract54331300
Editorial3461718
Letter-to-the-editor3792832
Book chapter6908
Evaluation study00280
Multicenter study00190
Randomized controlled trial00150
Meta-analysis00130
Validation study00110
Patent01900