3Zhang QQ, Ying GG, Pan CG, et al. Comprehensive evaluation ofantibiotics emission and fate in the river basins of China : sourceanalysis,multimedia modeling,and linkage to bacterial resistance[ J].Environ Sci Technol,2015,49( 11) :6772-6782.
4Haga N,Ishida H,Ishiguro T,et al. A Prospective Randomized Study toAssess the Optimal Duration of Intravenous Antimicrobial Prophylaxis inElective Gastric Cancer Surgery[ J]. Int Surg,2012,97(2) : 169-176.
5Williams NL,Glover MM,Crisp C,et al. Randomized controlled trial ofthe effect of 30% versus 80% fraction of inspired oxygen on cesareandelivery surgical site infection [ J ]. Am J Perinatol,2013,30 ( 9 ):781-786.
6Duggal N, Poddatorri V,Noroozkhani S, et al. Perioperative oxygensupplementation and surgical site infection after cesarean delivery : Arandomized trial[ J ]. Obstet Gynecol ,2013,122 (1 ) :79-84.
7Baaqeel H, Baaqeel R. Timing of administration of prophylacticantibiotics for caesarean section : a systematic review and meta-analysis [J]. BJOG,2013,120(6):661-669.