“…The most-investigated strategy was the individual or group self-management course/program, investigated in 52% of the studies [ 19 , 20 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 ], which encompassed a mix of the remaining strategies. Following, the order of the most-investigated strategies was physical exercise (in 34% of the studies), that could be specific [ 32 , 52 , 53 , 54 , 55 ] or general exercises [ 20 , 21 , 25 , 35 , 48 , 49 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 ], individually or in groups, followed by education (in 21% of the studies) [ 21 , 32 , 36 , 52 , 53 , 54 , 56 ...…”