“…The majority of the literature was published from 2000 [ 22 – 42 ], with ten articles published in the last five years [ 22 , 30 , 34 , 35 , 38 , 40 – 45 ]. Seventeen studies were conducted in North America [ 22 , 25 , 27 , 29 , 30 , 33 – 37 , 42 , 45 – 49 ], twelve in Europe [ 23 , 24 , 28 , 31 , 32 , 38 , 40 , 41 , 44 , 50 – 52 ], with two studies across both regions [ 26 , 29 ] and two further studies from Asia [ 43 , 53 ]. Studies were conducted in patients with five broad disease categories: mental health (n = 8) [ 28 , 31 , 35 , 40 – 42 , 46 , 48 ], musculoskeletal (n = 7) [ 23 , 34 , 36 , 39 , 45 , 47 , 54 ], respiratory (n = 5) [ 26 , 27 , 32 , 33 , 51 ], nervous system (n = 4) [ 29 , 36 , 37 , 44 ], and other conditions (n = 8) [ 22 , 25 , 30 , 38 , 43 , 49 , …”