Keyword :
portuurondersteuningstelsel , portuurondersteuners , programevaluering , uitkomsmeting , sisteemteorie , psychological well-being , psigiese welsyn , sosiale ondersteuning , high-risk behavioue , ho-risikogedrag , HIV/AIDS-prevention , MIV/VIGS-voorkoming , Substance abuse , substansmisbruik , programme evaluation , Adolescents , system theory , outcome measure , peer support system , peer supporters , social support
