Trial subjects and methods: The study will involve a total of 1120 patients attending 8 established out-patient clinics in South Asia (140 patients at each clinic). Patients enrolled in the trial will be randomly assigned to either the control (existing care) or the intervention group and will be followed up for an average of 30 months. The total trial duration is about 3.5 years, from mid-August 2010 to December 31, 2013.