Brinkmeier, Thomas, and Peter J. Frosch. 2001. “Pyodermatitis-Pyostomatitis Vegetans: A Clinical Course of Two Decades With Response to Cyclosporine and Low-Dose Prednisolone”. Acta Dermato-Venereologica 81 (2):134-36. https://doi.org/10.1080/00015550152384290.