References
- Magann EF, Evans S, Hutchinson M, Collins R, Howard BC, Morrison JC. Postpartum hemorrhage after vaginal birth: an analysis of risk factors. SMJ 2005;98:419–422.
- Combs CA, Murphy EL, Laros RK Jr. Factors associated with postpartum hemorrhage with vaginal birth. Obstet Gynecol 77;1991:69–76.
- Suzuki S, Kikuchi F, Ouchi N, Nagayama C, Nakagawa M, Inde Y, Igarashi M, Miyake H. Risk factors for postpartum hemorrhage after vaginal delivery of twins. J Nippon Med Sch 2007;74:414–417.
- Daniel Y, Schreiber L, Geva E, Amit A, Pausner D, Kupfermine MJ, Lessing JB. Do placentae of term singleton pregnancies obtained by assisted reproductive technologies differ from those of spontaneously conceived pregnancies? Hum Reprod 1999;14:1107–1110.