1. US Food and Drug Administration. Genetic non-invasive prenatal screening tests may have false results: FDA safety communication. 19 Apr 2022. https://www.fda.gov/medical-devices/safety-communications/genetic-non-invasive-prenatal-screening-tests-may-have-false-results-fda-safety-communication?utm_campaign=FDA+Warns+of+Risks+Associated+with+Non-Invasive+Prenatal+Screeni&utm_medium=email&utm_source=govdelivery
2. Nuffield Council on Bioethics. Non-invasive prenatal testing: ethical issues. 1 Mar 2017. https://www.nuffieldbioethics.org/publications/non-invasive-prenatal-testing
3. Medicines and Healthcare Products Regulatory Agency. Yellow Card reporting site. https://yellowcard.mhra.gov.uk/