Standard clinic record forms will be used to collect data from the primary care clinic or hospital through a combination of direct interviews and abstraction of information from their case notes by trained research health staff. Any unclear information in the case notes will be verified with the clinician concerned immediately. Field data will also be collected by means of standard pre-coded questionnaires administered to household heads. Individual in-depth interviews will also be administered to respondents using an interview guide. Focus groups will be organized by contacting the participants and arranging for a suitable meeting date, time and venue, the previous week. Focus groups will consist of 8-12 discussants with a moderator and an observer/notetaker. Discussions will be recorded by means of a tape recorder with permission from discussants.