%0 Journal Article
%T A Counseling Program for Clients in Substitution Treatment: Effects and Dropout Prediction
%A C. Dennis Boywitt
%A Christian Zwingmann
%J ISRN Rehabilitation
%D 2012
%I Hindawi Publishing Corporation
%R 10.5402/2012/290764
%U http://dx.doi.org/10.5402/2012/290764