“…On the walls of the apartment charts displayed several brand names of heroin along with different formulas for cutting each brand. (National Drug Intelligence Center, 2000b) Besides those studies that seek to assist law enforcement, the other major branch of research on the precise content of ''heroin'' has been developed by medical providers/ researchers who examine the drug in the wake of urgent public health crises, especially deaths attributable to overdose (Sells et al, 1972;Greene et al, 1974;Huber, 1974;Huber et al, 1974;Richards et al, 1976;Redmond, 1979;Cunningham et al, 1984;Feuer and French, 1984;Ruttenber and Luke, 1984;Joe and Simpson, 1987;Perucci et al, 1991;Shesser et al, 1991;Davoli et al, 1993;Pu¨schel et al, 1993;Sullivan, 1994;Bammer and Sengoz, 1995;Zador et al, 1996;Dillman, 1997;Poulin et al, 1998;Darke et al, 1999;Perrone et al, 1999;Sporer, 1999;Hamilton et al, 2000;Rissler et al, 2000). For example, in 1995, following 325 overdoses in East Coast cities attributed first to ''heroin'' and then to ''scopolamine'', doctors who specialize in emergency medicine and work in poison centers wrote about the demographics and clinical characteristics of the epidemic (Perrone et al, 1999;Hamilton et al, 2000).…”