“…Fourteen studies reported on an individual clinic [27-33, 36, 49-53, 56] and six studies reported on multiple clinics [23,24,26,34,54,55]. There were a variety of study designs; seven retrospective audits [26,[28][29][30][31][32]51], three prospective observational studies [24,36,55], two cross-sectional studies [23,49], two prospective cohort studies [54,56], two retrospective cohort studies [50,52], two other retrospective observational studies [27,34], one randomised controlled trial [53], and one qualitative interpretive study [33]. A total of 39 clinics were assessed in data synthesis; 33 clinics (87%) were in the UK, two in America, two in Australia, and one each in Germany and Italy.…”