DATA WERE COLLECTED DURING OCTOBER 2001 BY 10 FIELD
TEAMS. EACH TEAM CONSISTED OF TWO TRAINED PUBLIC HEALTH
OFFICERS, WHO WORKED AT THE DISTRICT HEALTH OFFICE OR HEALTH CENTER IN THE SELECTED AREAS. TRAINING FOR TEAM MEMBERS INCLUDED THE METHODS FOR SELECTING PARTICIPANTS, INTRODUCING THEMSELVES TO PARTICIPANTS, OBTAINING INFORMED CONSENT AND DATA COLLECTION