H. D. Mugauri, Ministry of Health and Child care, AIDS and TB Unit, Harare, Zimbabwe dumiwaboka@gmail.com
I. Phiri , Ministry of Health and Child care, Department of Epidemiology and Disease Control, Harare, Zimbabwe drisaacphiri@yahoo.com
A. Chadambuka, University of Zimbabwe, Department of Primary Health Care Sciences. Family Medicine, Global and Public Health Unit,  Harare, Zimbabwe. achadambuka1@yahoo.co.uk
T. P. Juru,- University of Zimbabwe, Department of Primary Health Care Sciences. Family Medicine, Global and Public Health Unit,  Harare, Zimbabwe. jtsitsi@afenet.net
G. Shambira,  University of Zimbabwe, Department of Primary Health Care Sciences. Family Medicine, Global and Public Health Unit,  Harare, Zimbabwe. gshambira@afenet.net
N. T. Gombe, University of Zimbabwe, Department of Primary Health Care Sciences. Family Medicine, Global and Public Health Unit,  Harare, Zimbabwe. ngombe@afenet.net
M. Tshimanga University of Zimbabwe, Department of Primary Health Care Sciences. Family Medicine, Global and Public Health Unit,  Harare, Zimbabwe. Mtshimanga@afenet.net