“…18–39 The studies varied in research designs, including 11 randomized controlled trials, 18–20,23,26,27,30–33,35 five pilot studies, 21,24,25,28,36 two observational studies, 29,34 one case study, 22 one qualitative study, 37 one mixed-method study, 38 and one cross-sectional study. 39 The studies had been conducted in different locations: 11 of them in Europe, 18–20,22,28,31,33–36,39 six in Asia, 23,24,29,30,32,37 three in Australia, 25–27 and two in North America. …”