1. Human Fertilisation and Embryology Authority (2019, May). Fertility treatment 2017: trends and figures. https://www.hfea.gov.uk/media/2894/fertility-treatment-2017-trends-and-figures-may-2019.pdf .
2. Centre for Disease Control and Prevention. (2021). Assisted Reproductive Technology: Fertility Clinic and National Summary Report. Accessed 11/12/2021: https://www.cdc.gov/art/reports/2019/pdf/2019-Report-ART-Fertility-Clinic-National-Summary-h.pdf.
3. Wyns C, De Geyter C, Calhaz-Jorge C, Kupka MS, Motrenko T, Smeenk J, Goossens V. ART in Europe, 2017: results generated from European registries by ESHRE. Human Reproduction Open. 2021;2021(3):1–17.
4. National Perinatal Epidemiology and Statistics Unit. (2021, September). Assisted reproductive technology in Australia and New Zealand. The University of New South Wales. https://npesu.unsw.edu.au/sites/default/files/npesu/data_collection/Assisted%20Reproductive%20Technology%20in%20Australia%20and%20New%20Zealand%202019.pdf.
5. Hammarberg K, Fisher JRW, Wynter KH. Psychological and social aspects of pregnancy, childbirth and early parenting after assisted conception: a systematic review. Hum Reprod Update. 2008;14(5):395–414. https://doi.org/10.1093/humupd/dmn030.