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Table 1 Initial search strategy

From: Detection of Fusobaterium nucleatum in feces and colorectal mucosa as a risk factor for colorectal cancer: a systematic review and meta-analysis

Database and search dates Search #1 Search #2 Search #3 Search #4 Search #5
All Ovid MEDLINE (R). January 1, 1946, to December 31, 2018 exp Colonic Polyps/ or exp Colorectal Neoplasms/ ((colon$ or colorect$ or rect$ or sigmoid) adj5 (polyp$ or adeno$ or cancer$ or carcinoma$ or malignan$ or metastas$ or neoplas$ or oncolog$ or tumo$)).tw. #1 OR #2 Fusobacterium nucleatum/ or exp Fusobacterium Infections/ or nucleatum.tw. #3 AND #4
Embase. January 1, 1974, to December 31, 2018 exp Colon Polyp/ or exp Colorectal Tumor/ ((colon$ or colorect$ or rect$ or sigmoid) adj5 (polyp$ or adeno$ or cancer$ or carcinoma$ or malignan$ or metastas$ or neoplas$ or oncolog$ or tumo$)).tw. #1 OR #2 Fusobacterium nucleatum/ or exp Fusobacterium Infection/ or nucleatum.tw. #3 AND #4
CINAHL Plus with Full Text. January 1, 1981, to December 31, 2018 TX ((colon* or colorect* or rect* or sigmoid) N5 (polyp* or adeno* or cancer* or carcinoma* or malignan* or metastas* or neoplas*or oncolog* or tumo*)) (MH “Colonic Polyps”) OR (MH “Colorectal Neoplasms+”) #1 OR #2 (MH “Fusobacterium Infections+”) OR TX nucleatum #3 AND #4
Web of Science Core Collection. January 1, 1945, to December 31, 2018 TOPIC: (((colon* or colorect* or rect* or sigmoid) NEAR/5 (polyp* or adeno* or cancer* or carcinoma* or malignan* or metastas* or neoplas* or oncolog* or tumo*))) TOPIC: (nucleatum) #1 AND #2   
EBM Reviews—Cochrane Database of Systematic Reviews. January 1, 2005, to December 31, 2018 ((colon$ or colorect$ or rect$ or sigmoid) adj5 (polyp$ or adeno$ or cancer$ or carcinoma$ or malignan$ or metastas$ or neoplas$ or oncolog$ or tumo$)).tw. nucleatum.tw. #1 AND #2