“…There were 21 qualitative studies [ 29 , 30 , 31 , 32 , 33 , 34 , 35 , 37 , 38 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 50 , 51 , 52 , 54 ] and six mixed-method studies [ 18 , 36 , 39 , 49 , 50 , 53 ], although only the qualitative data included facilitators and barriers in four of those studies. Most studies were cross-sectional, with only two longitudinal studies [ 32 , 50 ].…”