Show 10 5 10 15 20 50 100 250 Sort by year (new to old) Actions Download search results Subscribe to news feed Your filters: cql: author="De Leon, George*" or (type exact bookEditor and editor="De Leon, George*") Add to list Journal Article A1 open access Essential elements of treatment: a comparative study between European and American therapeutic communities for addiction Ilse Goethals (UGent) , Veerle Soyez (UGent) , Gerald Melnick, George De Leon and Eric Broekaert (UGent) (2011) SUBSTANCE USE & MISUSE. 46(8). p.1023-1031