“…62 (71%) studies reported no AEs. 12 (14%) studies reported deaths in the intervention group [ 29 , 35 , 43 , 45 , 49 , 52 , 54 , 66 , 74 , 79 , 86 , 99 ] and 14 (16%) reported other reasons for not completing the intervention [ 27 , 34 , 38 , 42 , 46 , 50 , 52 , 55 , 60 , 72 , 73 , 81 , 100 , 108 ]; however, no links between the study intervention and death or noncompletion were reported. Reasons for noncompletion included acute exacerbation, other respiratory-related issues, nonrespiratory health issues and personal reasons such as lack of motivation, being called to receive lung transplantation and transportation problems.…”