title: [Iatrogenic occurrences in health care: difficulties involved in the subject study].
abstract: The author examines the main difficulties involved in the study of iatrogenic occurrences in health care. Conceptual problems and difficulties related to research methodologies issues are discussed.
authors.forename: K G
authors.initials: KG
authors.lastname: Padilha
mesh_terms: D006801:Humans; D007049:Iatrogenic Disease; D012106:Research