“…Seven other studies were omitted because of the following reasons: (a) without control group (Adnan et al, 2021; Unsgaard-Tøndel et al, 2016), (b) duplicate study (Bastiaenen et al, 2004; Stuge et al, 2004), (c) review article (Sakamoto & Gamada, 2019), (d) lack of access to data (Chaudry et al, 2013), and (e) study with different population (Raza et al, 2020). 11 studies (Bastiaenen et al, 2006; Ehsani et al, 2020; ElDeeb et al, 2019; Ghavipanje et al, 2021; Gutke et al, 2010; Khorasani et al, 2020; Mens et al, 2000; Sakamoto et al, 2018; Saleh et al, 2019; Stuge et al, 2004; Teymuri et al, 2018) met our inclusion criteria and were entered in the meta-analysis (PRISMA flow diagram; Figure 1). Studies were performed in Iran ( n = 4), Netherland ( n = 2), Egypt ( n = 2), Sweden ( n = 1), Japan ( n = 1), and Norway ( n = 1).…”