Peters, Thorsten, Susanne Theile-Ochel, Jen Chemnitz, Dietmar Söhngen, Nicolas Hunzelmann, and Karin Scharffetter-Kochanek. 1999. “Exfoliative Dermatitis After Long-Term Methotrexate Treatment of Severe Psoriasis”. Acta Dermato-Venereologica 79 (5):391-92. https://doi.org/10.1080/000155599750010382.