“…There were 15 interventional studies (14 open label (OL) trials [20][21][22][23][24][25][26][27]30,32,33,36,49,50 and one randomised controlled trial (RCT) 42 ) and 30 non interventional studies (12 retrospective cohort studies, 28,31,45,48,52,54,[56][57][58][59][60][61] 10 case reports, 18,19,35,38-41, 43,44,47 four prospective cohort studies 4,29,37,55 and four case control studies). 34,46,51,53 A Jadad score ¼ 4 was assigned to the RCT. 42 Among the studies evaluated through the NOS scale there were four low (8.9%), 19,35,39,43 15 moderate (33.3%) 18,21,23,25,30,33,38,…”