“…The primary aims of the interventions vary across the studies. One study compared two interventions, one with a psychoeducational focus and one focusing on social support [ 67 ]. Therefore, we categorized 34 interventions from 33 studies regarding their primary aim: Reduction of psychological burden (n = 9) [ 51 – 53 , 63 , 66 , 68 , 69 , 74 , 76 ], reduction of physical and psychological burden (n = 9) [ 54 – 59 , 70 , 78 , 79 ], improvement of social skills (n = 8) [ 47 – 50 , 60 , 64 , 75 , 77 ], increase of social support (n = 6) [ 61 , 62 , 65 , 67 , 71 , 72 ], and psychoeducation (n = 2) [ 67 , 73 ].…”