“…Table 2 summarizes the interventions and outcomes of the studies. Nine studies were conducted in the USA [19,20,21,22,23,24,25,26,27], five in Japan [14,28,29,30], four in the UK [17,31,32,33], two in Australia [18,34], two in France [35,36], two in Denmark [15,37], one in Germany [38], one in Spain [39], and one in the Netherlands [16]. The majority of the studies were not blinded, three were double blinded [14,37], and two studies were single blinded [18,24].…”