[Experimental heroin maintenance programmes: the distance between what might be done and what is really done].
Trujols Albet
J
J
Casas Brugué
M
M
Pérez de los Cobos Peris
J
J
D006801:Humans; D011634:Public Health; D012107:Research Design; D015819:Substance Abuse, Intravenous / Q000453:epidemiology* / Q000517:prevention & control*