World Health Organization (WHO)2019-09-252019-09-252015-02-012008-02http://hdl.handle.net/20.500.12424/217842First, while the CIOMS 2002 guidelines are familiar to many ethical review committees, some committees that only review epidemiological studies may not be familiar with them. These committees would be better served by a single booklet thataddresses both observational and interventional epidemiology. Likewise,epidemiologists, who may move from conducting an observational study to an interventional study, should not have to shift back and forth between one document and the other. Therefore, it is the intention of the core group that this guidance document encompass all types of epidemiological studies. In the case of interventional studies, the present Guidelines aregenerally the same as those in the 2002 document, but whenever appropriate the commentary has been focused on issues that arise in epidemiological rather than biomedical research.engWith permission of the license/copyright holdercode of ethicscode of conductepidemiologyepidemiologistshuman healthbiomedical researchBioethicsHealth ethicsPostprint