“…[ 50 ] Sample sizes ranged from 1 in case reports to 31,672 in a study on the elderly in 14 European countries. [ 45 ] Of the 44 selected studies, the majority were carried out in the Americas: 7 in USA,[ 38 44 51 52 53 54 55 56 ]11 in Brazil,[ 26 27 30 34 40 47 50 57 58 59 60 61 ] and 2 in Peru. [ 28 37 ] Twelve studies were conducted in Asia.…”