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. 2017 Jul 31;6(1):578. doi: 10.4102/ajlm.v6i1.578
Countries
Angola Malawi
Benin Mali
Botswana Mauritania
Burkina Faso Mozambique
Burundi Namibia
Cameroon Niger
Central African Republic Nigeria
Chad North Sudan
Comoros Rwanda
Congo Senegal
Cote d’Ivoire Sierra Leone
DRC South Africa
Equatorial Guinea South Sudan
Eritrea Swaziland
Ethiopia United Republic of Tanzania
Ghana The Gambia
Guinea Togo
Guinea-Bissau Uganda
Kenya Zambia
Lesotho Zimbabwe
Liberia
Madagascar

Period of the search: 13–27 March 2012.