To assess the effects of consumer engagement in health care policy. research and services. We updated a review published in 2006 and 2009 and revised the previous search strategies for key databases (The Cochrane Central Register of Controlled Trials; MEDLINE; EMBASE; PsycINFO; CINAHL; Web of Science) up to February 2020. Selection criteria included randomised controlled trials assess... https://www.herbsdailyes.shop/product-category/medical-and-ambulatory-supplies-clinical-laboratory/