“…The majority of the included articles (11 of 18, 61%) were non-randomized controlled studies (TABLE 2). 36,39,41,44,48,50,51,54,56,57 Seven articles (of 18, 3 9 %) w e r e r a n d o m i z e d c o n t r o l l e d t r i a l s (RCTs). 37,38,42,46,47,53,58 The study period of the included articles ranged from 1991 to 2019.…”