“…Thirteen studies were done in Europe 17,19,21,31,33,38,42,43,45,46,48,49,50 , six in Asia 30,36,39,40,44,47 , two in Australasia 34,35 , one in North America 41 , and one in South America 32 . Among the studies included in the review, 19 17,18,19,30,31,32,33,34,36,38,39,40,42,43,44,46,47,48,49,50 compared HCPR to control group (n = total 893; n HCPR = 485), while four 35,37,41,45 compared HCPR to OPR (n total = 375; n HCPR = 178). No studies reported harmful effects related to HCPR during interventions.…”