Authors: Delva, J Van Etten, ML Gonzalez, GB Cedeno, MA Penna, M Caris, LH Anthony, JC

Citation: J. Delva et al., First opportunities to try drugs and the transition to first drug use: Evidence from a national school survey in Panama, SUBST USE M, 34(10), 1999, pp. 1451-1467

Authors: Kirsch, JD Cedeno, MA

Citation: Jd. Kirsch et Ma. Cedeno, Informed consent for family planning for poor women in Chiapas, Mexico, LANCET, 354(9176), 1999, pp. 419-420