Ethics and epidemiological research.
D001291:Attitude of Health Personnel; D035843:Biomedical Research; D003219:Confidentiality; D004812:Epidemiologic Methods; D004813:Epidemiology; D026724:Ethical Review; D028744:Ethics Committees, Research; D004992:Ethics, Medical; D006801:Humans; D038622:Internationality; D011897:Random Allocation; D012107:Research Design; D035842:Research Subjects