00743nam a22002297i 450000500170000000800410001702200220005804100080008010000160008824501320010465000160023665000220025265000140027465000130028865000290030165000310033065000300036165000250039165300150041665500150043177300670044620141212094100.0981211s1998    sp     gr     000 0 spa c  a0376-8716 (papel)  aeng1 aTORRENS, M.10aPLASMA METHADONE CONCENTRATIONS AS AN INDICATOR OF OPIOID WITHDRAWAL SYMPTOMS AND HEROIN USE IN A METHADONE MAINTENANCE PROGRAM14aDetección14aDrogodependencias14aHeroína14aMetadona14aProgramas de bajo umbral14aProgramas de mantenimiento14aSíndrome de abstinencia14aTratamiento médico10aAdicciones 4aDocumental0 tDRUG AND ALCOHOL DEPENDENCEgVol. 52, no. 3 (1998), p. 193-200