1. Bateman BT, Simpson LL. Higher rate of stillbirth at the extremes of reproductive age: A large nationwide sample of deliveries in the United States. American Journal of Obstetrics and Gynecology. 2006;194:840-845
2. National Institute for Clinical Excellence. Multiple Pregnancy: Antenatal Care for Twin and Triplet Pregnancies. Clinical Guideline 129. National Collaborating Centre for Women’s and Children’s Health. London, UK: NICE; 2011
3. Calhaz-Jorge C, De Geyter C, Kupka MS, de Mouzon J, Erb K, Mocanu E, et al. The European IVF-monitoring (EIM) Consortium for the European Society of Human Reproduction and Embryology (ESHRE). Assisted reproductive technology in Europe, 2013: Results generated from European registers by ESHRE. Human Reproduction. 2017;32(10):1957-1973
4. Basso O, Weinberg CR, D’Aloisio AA, Sandler DP. Maternal age at birth and daughters’ subsequent childlessness. Human Reproduction. 2018;33(2):311-319
5. Bracewell-Milnes T, Saso S, Bora S, Ismail AM, Al-Memar M, Hamed AH, et al. Investigating psychosocial attitudes, motivations and experiences of oocyte donors, recipients and egg sharers: A systematic review. Human Reproduction Update. 2016;22(4):450-465