References
- Hois E L, Hibbeln J F, Sclamberg J S. Spontaneous twin tubalectopic gestation. Journal of Clinical Ultrasound 2006; 34: 352–355
- Lewis, G. The Confidential Enquiry into Maternal and Child Health (CEMACH). Saving mothers' lives: reviewing maternal deaths to make motherhood safer 2003–2005. The Seventh Report on Confidential Enquiries into Maternal Deaths in the United Kingdom. CEMACH, London 2007
- Parker J, Hewson A D, Calder-Mason T, et al. Transvaginal ultrasound diagnosis of a live twin tubal ectopic pregnancy. Australasian Radiology 1999; 43: 95–97
- RCOG. The management of early pregnancy loss guideline. Royal College of Obstetricians and Gynaecologists, London 2008
- Sampson A, de Crespigny L CH. Vanishing twins: the frequency of spontaneous fetal reduction of a twin pregnancy. Ultrasound in Obstetrics and Gynecology 1992; 2: 107–109