“…Across the 27 studies ( 17-43 ), 7 studies were longitudinal ( 17 , 26 , 27 , 29 , 34 , 39 , 41 ), 9 reported cross-sectional data from ongoing longitudinal studies ( 18 , 21 , 23-25 , 33 , 35-37 ), and 11 were cross-sectional studies ( 19 , 20 , 22 , 28 , 30-32 , 38 , 40 , 42 , 43 ). Of the 7 longitudinal studies, 2 studies ( 17 , 29 ) were prospective and 5 were retrospective studies ( 26 , 27 , 34 , 39 , 41 ).…”