“…In total, 1713 documents were retrieved from Pubmed, Embase, The Cochrane Library, and Web of Science databases, from which 29 studies were selected by removing duplicates and filtering titles and abstracts. After reviewing the full-text articles, we selected 20 [ 16 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 ], including 12 cohort studies, five cross-sectional studies, and three case-control studies. Among the selected studies, eight of the 20 were conducted in China, three in the United Kingdom, two in Turkey, and one in Canada, Singapore, India, Spain, Australia, Italy, and Poland, respectively.…”