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3. Progesterone for preventing pregnancy termination after initiation of medical abortion with mifepristone;Garratt;Eur J Contracept Reprod Health Care,2017
4. Medical abortion with mifepristone and vaginal misoprostol between 64 and 70 days' gestation;Hsia;Contraception,2019
5. Royal College of Obstetricians & Gynaecologists, Faculty of Sexual and Reproductive Healthcare, Royal College of Midwives and British Society of Abortion Care Providers . Joint statement on ‘Abortion reversal’: The Royal College of Obstetricians and Gynaecologists (RCOG), The Faculty of Sexual and Reproductive Healthcare (FSRH), the Royal College of Midwives (RCM) and the British Society of Abortion Care Providers (BSACP) 2022. Available: https://www.rcog.org.uk/media/nbahkgvo/rcog-fsrh-abortion-reversal-position-statement.pdf