de Groot, H.J. et al. 2018. Direct Immunofluorescence of Mechanobullous Epidermolysis Bullosa Acquisita, Porphyria Cutanea Tarda and Pseudoporphyria. Acta Dermato-Venereologica. 99, 1 (Sep. 2018), 26–32. DOI:https://doi.org/10.2340/00015555-3021.