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Enrollment flowchart. A total of 968 patients with gastrointestinal fistula (GI) were collected from 1205 inpatients in our institute between November 2012 and October 2015. Among 440 GI patients receiving surgical procedure, 290 received definitive surgery and were divided into surgical site infections (SSI) group (n = 99) and non-SSI (n = 191) groups.
