1. Severe obstetric morbidity of the third trimester, delivery and early puerperium in Niamey (Niger);Prual;Afr J Reprod Health,1998
2. Maternal morbidity in developing countries: a review and comments;Liskin;Int J Obstet Gynecol,1992
3. Aspects of maternal morbidity: the experience of less developed countries;Howard;Adv Int Maternal Child Health,1987