مقالة · مجلة · 1998
D. McGuinness, Kwadwo Koram, Steve Bennett, G.E. Wagner, F K Nkrumah, Eleanor M Riley
Transactions of the Royal Society of Tropical Medicine and Hygiene
كما طُبع: David McGuinness
كما طُبع: Gillian Wagner
كما طُبع: Francis Nkrumah
كما طُبع: Eleanor Riley