Makemba, Ahmed; Mbuyita, Selemani; Mayombana, Charles; Mkikima, Agatha; Mtitu, Ismail; Muhikwa, Beatus; Kinasa, Joseph; Khuzwayo, Nathalia; Zilinde, John; Selemani, Mgaya; Mbuji, Khamis; Ifakara Health Research and Development Centre; Tanzania Essential Health Interventions Project; Morogoro and Rufiji District Councils(Tanzania. Ministry of Health, Dar es Salaam, TZ, 2005)