title: [The question of research].
authors.affiliation: Universitaires Saint-Louis, Bruxelles.
authors.forename: L
authors.initials: L
authors.lastname: Van Campenhoudt
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000209:etiology; D006801:Humans; D008962:Models, Theoretical; D012107:Research Design; D012307:Risk Factors; D012725:Sexual Behavior; D012942:Social Sciences