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© May 2005 Lorentz JÄNTSCHI && Sorana Daniela BOLBOACĂ

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 N05 Health Care Quality, Access, and Evaluation D017530 +
 N05.715 Quality of Health Care D011787 +
 N05.715.360 Health Care Evaluation Mechanisms D017531 +
 N05.715.360.775 Epidemiologic Study Characteristics D016020 +
 N05.715.360.775.175 Epidemiologic Studies D016021 +
 N05.715.360.775.175.200 Case-Control Studies D016022 +
 N05.715.360.775.175.200.710 Retrospective Studies D012189