Paulsen E, Bygum A. Keratin Gel as an Adjuvant in the Treatment of Recalcitrant Pyoderma Gangrenosum Ulcers: A Case Report. Acta Derm Venereol [Internet]. 2018 Nov. 19 [cited 2025 Feb. 17];99(2):234-5. Available from: https://medicaljournalssweden.se/actadv/article/view/3101