“…A total of 19 studies (Ceulemans et al, 2020;Durankuş and Aksu, 2020;Farewell et al, 2020;He et al, 2020;Lebel et al, 2020;Li et al, 2020;Liu et al, 2020;Mappa et al, 2020;Matsushima and Horiguchi, 2020;Oskovi-Kaplan et al, 2020;Parra-Saavedra et al, 2020;Patabendige et al, 2020;Preis et al, 2020;Saccone et al, 2020;Sade et al, 2020;Silverman et al, 2020;Wu et al, 2020b;Yue et al, 2020;Zhang and Ma, 2020) were cross-sectional, and 4 (Ayaz et al, 2020;Berthelot et al, 2020;Gu et al, 2020;Zanardo et al, 2020) were case-control studies. Among the 23 studies, 7 were located in China (Gu et al, 2020;He et al, 2020;Li et al, 2020;Liu et al, 2020;Wu et al, 2020b;Yue et al, 2020;Zhang and Ma, 2020), 3 were implemented in America (Farewell et al, 2020;Preis et al, 2020;Silverman et al, 2020), 3 were performed in Turkey (Ayaz et al, 2020;Durankuş and Aksu, 2020;Oskovi-Kaplan et al, 2020), 3 were undertaken in Italy (Mappa et al, 2020;Saccone et al, 2020;…”