“…Studies were conducted in 13 different countries, with the majority of services from the United States (n = 15, 52%). 1,4,7,17,[26][27][28][29][30][33][34][35][36]39,40 The most common study type was a randomized controlled trial (RCT) (n = 11, 38%). 3,7,11,16,17,20,25,28,30,31,37 Most studies were conducted over 24 weeks (n = 9, 31%), 1,4,[15][16][17]20,26,27,31 with the minimum study length at 12 weeks, 3,12,26 and the maximum study length at 240 weeks.…”