“…Moreover, one study each originated from Brazil, Bulgaria, Canada, France, Great Britain, and Norway. Twenty-nine studies [ 6 - 8 , 12 , 19 - 21 , 25 - 27 , 30 - 36 , 38 - 47 , 49 , 51 , 52 ] used interviews, six were case studies [ 14 , 22 , 28 , 29 , 45 , 53 ], one used interviews and focus groups [ 9 ], and eight [ 10 , 11 , 13 , 23 , 24 , 37 , 48 , 50 ] used interviews supported by a questionnaire. For the eight studies that used both interviews and questionnaires, we relied on the qualitative results generated from the interviews.…”