Tchernev, Georgi, Anastasiya Atanasova Chokoeva, and Uwe Wollina. “Lichen Amyloidosis Associated With Rheumatoid Arthritis: Unique Presentation in a Bulgarian Patient”. São Paulo Medical Journal 135, no. 1 (February 2, 2017): 76–78. Accessed October 15, 2025. https://periodicosapm.emnuvens.com.br/spmj/article/view/715.