TY - GEN AU - Colpaert, Kathy AU - De Clercq, Tinneke TI - Implementing the "Treatment Demand Indicator" in Belgium : registration of drug users in treatment T2 - IPH/EPI reports PY - 2003/// CY - Brussels PB - Scientific Institute of Public Health KW - Belgiƫ KW - drugs KW - hulpverlening KW - onderzoeksmethoden KW - onderzoeksrapporten KW - registratie ER -