Fig. 1From: Dietary factors and risk of mortality among patients with esophageal cancer: a systematic reviewFlowchart of the literature selection. Abbreviation: WOS, Web of Science; HR, hazard ratio; RR, relative risk; OR, odd ratio; EC, esophageal cancer; ESCC, esophageal squamous cell carcinoma; EAC, esophageal adenocarcinoma. CNKI and Wanfang are Chinese database, CNKI: http://new.oversea.cnki.net/index/; Wanfang: http://www.wanfangdata.com.cn/resource_nav/index.doBack to article page