Collen Madembo, Harare City Health Department, Harare, Zimbabwe 
Gerald  Shambira,  University of Zimbabwe, Department of Primary Health Care Sciences, Family Medicine, Global and Public Health Unit, Harare, Zimbabwe gshambira@afenet.net
Prosper Chonzi ,  Harare City Health Department, Harare, Zimbabwe
Tsitsi Patience Juru,  University of Zimbabwe, Department of Primary Health Care Sciences, Family Medicine, Global and Public Health Unit, Harare, Zimbabwe jtsitsi@afenet.net
Addmore Chadambuka,  University of Zimbabwe, Department of Primary Health Care Sciences, Family Medicine, Global and Public Health Unit, Harare, Zimbabwe achadambuka1@yahoo.co.uk
Notion Tafara Gombe University of Zimbabwe, Department of Primary Health Care Sciences, Family Medicine, Global and Public Health Unit, Harare, Zimbabwe and African Field Epidemiology Network, Harare Zimbabwe 
Mufuta Tshimanga University of Zimbabwe, Department of Primary Health Care Sciences, Family Medicine, Global and Public Health Unit, Harare, Zimbabwe Mtshimanga@afenet.net