“…Of these included studies, 12 studies 17 , 19 , 21 , 25 , 27 , 31 , 32 , 37 , 39 , 42 , 43 , 51 were from Asia (Malaysia, Iran, Pakistan, India, Kuwait, Nepal and China), 15 studies 18 , 22 , 28 , 29 , 33 , 35 , 36 , 38 , 40 , 44 , 47 , 48 , 49 , 50 , 52 from Europe (Turkey, Poland, Portugal, Sweden, Netherlands, Spain, UK and Norway), six studies 20 , 23 , 24 , 34 , 41 , 45 from Africa (Malawi, Nigeria and Ethiopia), four studies 5 , 30 , 44 , 53 from North America (USA), one study 26 from South America (Brazil) and two studies 46 , 50 from Oceania (Australia). The present study is was a multicenter cross‐sectional study of four countries, USA, UK, Norway and Sweden.…”