[1] IntraHlth Int, POB 6639, Kigali, Rwanda
[2] Univ Groningen, Univ Med Ctr Groningen, Dept Hlth Sci, Global Hlth, NL-9700 RB Groningen, Netherlands
[3] Rwanda Biomed Ctr, KG 203 St, Kigali, Rwanda
[4] Jhpiego, Baltimore, MD 21231 USA
[5] Maternal & Child Survival Program, Washington, DC 20036 USA
[6] Radboudumc Nijmegen, Amalia Childrens Hosp, NL-6500 HB Nijmegen, Netherlands
[7] Leeuwarden Med Ctr, Dept Obstet & Gynaecol, NL-8934 AD Leeuwarden, Netherlands