“… 35–37 The remaining six studies were conducted in Denmark, 38 Nigeria, 39 Spain, 40 China, 41 Italy, 42 and the Netherlands. 43 Four studies were published between 2005 and 2009, 19 , 29 , 38 , 41 five were published from 2010 to 2014, 13 , 32 , 35 , 36 , 40 four studies were published between 2015 and 2019, 30 , 34 , 39 , 43 and six studies were published from 2020 to 2021. 12 , 28 , 31 , 33 , 37 , 42 Most studies used a two-arm RCT design ( n = 16), 12 , 13 , 19 , 28–30 , 32–35 , 37–39 , 41–43 and three studies used a three-arm RCT study design.…”