TY - GEN AU - Faggiano,Fabrizio TI - [Prevention of substance abuse: randomised or observational evaluation is absolutely needed] SN - 0214-4840 PY - 2010///0720 KW - Humans KW - Program Evaluation KW - Randomized Controlled Trials as Topic KW - Substance-Related Disorders KW - prevention & control N1 - Publication Type: Editorial; English Abstract ER -