title: DHHS halts quality improvement study: policy may hamper tests of methods to improve care.
authors.forename: Bridget M
authors.initials: BM
authors.lastname: Kuehn
mesh_terms: D002985:Clinical Protocols; D003428:Cross Infection / Q000517:prevention & control*; D028744:Ethics Committees, Research; D006761:Hospitals / Q000592:standards*; D006801:Humans; D011787:Quality of Health Care; D012106:Research; D014481:United States; D014483:United States Dept. of Health and Human Services