Schaller, J, Haustein UF, and H Fiebig. “T-Helper Cell Activation in Bullous Pemphigoid”. Acta Dermato-Venereologica 67, no. 6 (November 1, 1987): 520–523. Accessed June 26, 2026. https://medicaljournalssweden.se/actadv/article/view/6593.