Gupta, MA, AK Gupta, and GN. Watteel. 1996. “Early Onset (< 40 Years Age) Psoriasis Is Comorbid With Greater Psychopathology Than Late Onset Psoriasis: A Study of 137 Patients”. Acta Dermato-Venereologica 76 (6):464-66. https://doi.org/10.2340/0001555576464466.