S. Bossart, V. Imstepf, R. E. Hunger, and S. M. Seyed Jafari, “Nonavalent Human Papillomavirus Vaccination as a Treatment for Skin Warts in Immunosuppressed Adults: A Case Series”, Acta Derm Venereol, vol. 100, no. 6, pp. 1–2, Mar. 2020.