“…38 , 39 The remaining 51 studies and one government report provided data on a single province: Guangdong (n = 3), 50 , 51 , 52 , 53 Guangxi (n = 2), 54 , 55 Tianjin (n = 2), 88 , 89 , 90 Sichuan (n = 2), 84 , 85 , 86 Xinjiang (n = 2), 91 , 92 , 93 , 94 , 95 , 96 Chongqing (n = 2), 47 , 48 Yunnan (n = 1), 97 Zhejiang (n = 1), 98 Inner Mongolia (n = 1), 64 Anhui (n = 3), 40 , 41 , 42 Fujian (n = 1), 21 Gansu (n = 1), 49 Guizhou (n = 3), 56 , 57 , 58 Hainan (n = 1), 59 Hebei (n = 1), 60 Hubei (n = 2), 61 , 62 Hunan (n = 1), 63 Jiangxi (n = 1), 65 , 66 Jilin (n = 1), 10 Liaoning (n = 5), 68 , 69 , 70 , 71 , 72 Beijing (n = 4), 43 , 44 , 45 , 46 Shandong (n = 3), 73 , 74 , 75 and Shanghai (n = 9). 23 , 76 , 77 , 78 , 79 , 80 , 81 ,…”