@book{113207,
	author = {COLON, H.M. and ET AL.},
	title = {THE VALIDITY OF DRUG USE SELF-REPORTS AMONG HARD CORE DRUG USERS IN A HOUSEHOLD SURVEY IN PUERTO RICO: COMPARISON FO SURVEY RESPONSES OF COCAINE AND HEROIN USE WITH HAIR TESTS},
	url = {\\Srvdatos\siis\docus\Revistas electrónicas\Drug and Alcohol Dependence R.854\2002\The validity of drug use self-reports.pdf}
}