Fig. 1From: Body mass index increases the lymph node metastasis risk of breast cancer: a dose-response meta-analysis with 52904 subjects from 20 cohort studiesFlow chart of literature retrieval and selection for this meta-analysis (CNKI: China National Knowledge infrastructure; VIP: VIP database of Chinese Scientific Journal; WanFang: Wanfang Data Knowledge Service Platform; PMC: PubMed Central)Back to article page