Research ethics: From principles to practical aspects.

Any research conducted on human beings or human biological samples requires a prior ethical assessment to avoid risks and problems for all involved parties. The legislation in this regard is very broad and emphasizes the safeguarding of patient rights in relation to the universal principles of autonomy, beneficence and justice. The present article reviews the regulations applicable to clinical trials, observational studies with drugs, biobank projects or any other type of study that may be conducted in the health care field. It also addresses the role of research ethics committees, data protection and the foundations of scientific integrity.