Fig. 1From: Cross-sectional assessments of participants’ characteristics and loss to follow-up in the first Opioid Substitution Therapy Pilot Program in Kabul, AfghanistanParticipants enrolled and surveyed in the OSTPP between February 2010 and May 2012. Eighty-three participants were initially enrolled and surveyed by MdM, 38 dropped-out, and 45 were retained. After 18 months, 57 clients were surveyed by JHUBack to article page