[1] Univ Cape Town, Groote Schuur Hosp, Fac Hlth Sci, Dept Obstet & Gynaecol, ZA-7925 Cape Town, South Africa
[2] African Network & Registry Assisted Reprod Techno, Cape Town, South Africa
[3] Grp Interafricain Etud Rech Applicat Fertilite, Lome, Togo
[4] Mil Hosp Tunis Tunisia, Autoimmune Dis Unit Res UR17DN02, Tunis, Tunisia
[5] Obafemi Awolowo Univ, Dept Obstet & Gynaecol, Ife, Nigeria
[6] Technovate Nigeria, Lagos, Nigeria
[7] Univ Zimbabwe, Coll Hlth Sci, Dept Obstet & Gynaecol, POB A178 Avondale, Harare, Zimbabwe