SE/D0/01: Preparatory study of drug use in Belgium and neighbouring countries
SO/01/008: The Belgian Drug Policy in numbers
TO/DD/01: Assessment of the medical-social assistance centres for drug users in Antwerpen and Genk
DR/01: Cure through substitute treatments in Belgium: development of a model for assessment of types of care and patients
DR/07: Substitute treatments in Belgium, Development of a model for assessment of types of care and patients (Phase II)