Development of pemphigus vulgaris following mRNA SARS‐CoV‐19 BNT162b2 vaccination in an 89‐year‐old patient. (22nd December 2021) - Knechtl, G.V.; Seyed Jafari, S.M.; Berger, T.; Rammlmair, A.; Feldmeyer, L.; Borradori, L.