G Justus Hofmeyr , Sandra Ferreira , V Cheryl Nikodem , Lindeka Mangesi , Mandisa Singata , Zukiswa Jafta , Babalwa Maholwana , Zonke Mlokoti , Gijs Walraven and A Metin Gülmezoglu
BMC Pregnancy and Childbirth 2004, 4:16doi:10.1186/1471-2393-4-16