“…Among the included studies, eight were conducted in Europe, 14e20,24 two in Australia, 12,21 two in North America, 22,23 and one in Asia. 13 Regarding the study design, three studies were retrospective, 12,19,21 three studies were prospective, 13,16,20 four studies were randomized controlled trials, 15,17,22,23 and two studies were crosssectional. 14,18 The included studies identified DRPs during the MR process; according to the "PCNE statement on medication review 2013," 25 four studies performed a PCNE type 1/basic MR, 12,17,21,24 two studies performed a PCNE type 2b/intermediate MR, 14,20 and six studies performed a PCNE type 3/ advanced MR. 13,15,16,18,22 Three studies analyzed the impact of patients' participation in the improvement of the MR process.…”