Robin A. Pollini, Kimberly C. Brouwer, Remedios M. Lozada, Rebeca Ramos, Michelle F. Cruz, Carlos Magis-Rodriguez, Patricia Case, Scott Burris, Minya Pu, Simon D. W. Frost, Lawrence A. Palinkas, Cari Miller and Steffanie A. Strathdee
Addiction 103 ( 1 ): 101 - 108 , 2008