“…Sample size varied from 20 to 2713 individuals in the reviewed studies. Included articles consisted of studies from Australia ( n = 4) [ 33 – 36 ], UK ( n = 3) [ 37 – 39 ], Singapore ( n = 2) [ 40 , 41 ], Netherlands ( n = 2) [ 42 , 43 ], Canada and USA ( n = 2) [ 44 , 45 ], with one study from the Republic of Korea [ 46 ], China [ 32 ], Spain [ 47 ], Finland [ 48 ], Sweden [ 49 ] and Malaysia [ 50 ]. Thirteen studies included an older population [ 32 , 34 , 36 , 38 – 40 , 42 , 44 , 46 – 50 ] five studies included general adults [ 35 , 37 , 41 , 43 , 45 ] and one study focused solely on young adults aged 18–25 years [ 33 ].…”