1. Afdeling Zorgondersteuning en Behandeling; Aveleijn; Borne Overijssel The Netherlands
2. Nijmegen Institute for Scientist Practitioners in Addiction (NISPA); Radbound University; Nijmegen The Netherlands
3. Onderzoek en Advies; Tactus; Enschede The Netherlands
4. Behavioural Science Institute; Radboud University Nijmegen; Nijmegen The Netherlands
5. Trimbos Institute; Utrecht; The Netherlands