1. Centre for Disease Control and Prevention. (2021) 2019 Assisted reproductive technology: Fertility clinic and national summary report. Hyattsvile (MD): US Department of Health and Human Services, Available at: https://www.cdc.gov/art/reports/2019/pdf/2019-Report-ART-Fertility-Clinic-National-Summary-h.pdf (accessed 8 July 2022).
2. (2021) Fertility treatment 2019: Trends and figures. Human Fertilisation and Embryology Authority, London UK. Department of Health and Social Care, Available at: https://www.hfea.gov.uk/about-us/publications/research-and-data/fertility-treatment-2019-trends-and-figures/ (accessed 8 July 2022).
3. Newman JE, Paul RC, Chambers GM. (2021) Assisted reproductive technology in Australia and New Zealand 2019. The University of New South Wales, Australia: National Perinatal Epidemiology and Statistics Unit, Available at: https://npesu.unsw.edu.au/sites/default/files/npesu/data_collection/Assisted%20Reproductive%20Technology%20in%20Australia%20and%20New%20Zealand%202019.pdf (accessed 8 July 2022).
4. (2019) Fertility treatment 2017: Trends and figures. Human Fertilisation and Embryology Authority, London UK. Department of Health and Social Care, Available at: https://www.hfea.gov.uk/media/2894/fertility-treatment-2017-trends-and-figures-may-2019.pdf (accessed 8 July 2022).
5. Psychological stress and adjustment in pregnancy following assisted reproductive technology and spontaneous conception: A systematic review;Gourounti K;Women Health,2016