“…One study [ 16 ] originated from Australia, Canada, and USA while another described the sample as European [ 43 ]. Thirty studies used interviews [ 10 - 12 , 17 , 19 - 22 , 24 , 27 , 28 , 30 - 32 , 34 - 38 , 40 - 43 , 45 , 47 , 48 , 51 , 53 , 55 , 58 ], seven were case studies [ 9 , 23 , 29 , 39 , 49 , 50 , 57 ], one used interviews and focus groups [ 13 ], and twelve [ 14 - 16 , 19 , 25 , 26 , 33 , 44 , 46 , 52 , 54 , 56 ] used interviews supported by a questionnaire. For the studies that used both interviews and questionnaires, we relied on the qualitative or descriptive results generated from the interviews.…”