1. National Institute for Heath and Care Excellence (2021) Acne vulgaris: management. (NICE, London) NICE guideline [NG198], https://www.nice.org.uk/guidance/ng198 (accessed 28 Oct 2021).
2. Years lived with disability (YLDs) for 1160 sequelae of 289 diseases and injuries 1990–2010: a systematic analysis for the Global Burden of Disease Study 2010
3. Medicines and Healthcare products Regulatory Agency (2019) Oral retinoid medicines ▼: revised and simplified pregnancy prevention educational materials for healthcare professionals and women. https://www.gov.uk/drug-safety-update/oral-retinoid-medicines-revised-and-simplified-pregnancy-prevention-educational-materials-for-healthcare-professionals-and-women#topical-retinoids-and-neuropsychiatric-disorders (accessed 28 Oct 2021).
4. Medicines & Healthcare products Regulatory Agency (2014) Guidance. Isotretinoin for severe acne: uses and effects. https://www.gov.uk/government/publications/isotretinoin-for-severe-acne-uses-and-effects/isotretinoin-for-severe-acne-uses-and-effects (accessed 28 Oct 2021).
5. Medicines and Healthcare products Regulatory Agency (2020) Isotretinoin (Roaccutane ▼): reminder of important risks and precautions. https://www.gov.uk/drug-safety-update/isotretinoin-roaccutane-reminder-of-important-risks-and-precautions (accessed15 Oct 2021).