[1] Karolinska Inst, Dept Womens & Childrens Hlth, Stockholm, Sweden
[2] Karolinska Univ Hosp, Stockholm, Sweden
[3] Univ Cape Town, Womens Hlth Res Unit, Cape Town, South Africa
[4] Univ Baghdad, Al Kindy Coll Med, Baghdad, Iraq
[5] Centra Hosp Ltd, Dhaka, Bangladesh
[6] Univ British Columbia, Dept Obstet & Gynecol, Vancouver, BC, Canada
[7] Amer Univ Beirut, Fac Hlth Sci, Beirut, Lebanon
[8] Hosp Gen Agudos Dr Teodoro Alvarez, Dept Obstet & Pediat, Buenos Aires, DF, Argentina
[9] Pathfinder Int, Lima, Peru
[10] Hosp Gen Dr Manuel Gea Gonzales, Natl Inst Perinatol, Mexico City, DF, Mexico
[11] Univ Colombo, Dept Obstet & Gynecol, Colombo, Sri Lanka
[12] Serv Hosp Lahore, Serv Inst Med Sci, Lahore, Pakistan
[13] Aga Khan Univ, Nairobi, Kenya
[14] Univ Ghent, Ghent, Belgium