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E05 Investigative Techniques D008919 +
E05.318 Epidemiologic Methods D004812 +
E05.318.760 Epidemiologic Study Characteristics D016020 +
E05.318.760.500 Epidemiologic Studies D016021 +
E05.318.760.500.875 Cross-Sectional Studies D003430
E05.318.760.500.750 Cohort Studies D015331 +
E05.318.760.500.500 Case-Control Studies D016022 +
E05.318.760.500.950 Seroepidemiologic Studies D016036 +
G03 Environment and Public Health D004778 +
G03.850 Public Health D011634 +
G03.850.520 Epidemiologic Methods D004812 +
G03.850.520.450 Epidemiologic Study Characteristics D016020 +
G03.850.520.450.500 Epidemiologic Studies D016021 +
G03.850.520.450.500.875 Cross-Sectional Studies D003430
G03.850.520.450.500.750 Cohort Studies D015331 +
G03.850.520.450.500.500 Case-Control Studies D016022 +
G03.850.520.450.500.950 Seroepidemiologic Studies D016036 +
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 +
N05.715.360.775.175.275 Cross-Sectional Studies D003430
N05.715.360.775.175.250 Cohort Studies D015331 +
N05.715.360.775.175.200 Case-Control Studies D016022 +
N05.715.360.775.175.800 Seroepidemiologic Studies D016036 +
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