J. Tadros, S. Goodman, and E. R. Tkaczyk, “Subcutaneous scalp nodule as the presenting symptom of systemic light-chain amyloidosis”, Dermatol Pract Concept, vol. 8, no. 3, Jul. 2018, Accessed: Apr. 21, 2026. [Online]. Available: https://dpcj.org/index.php/dpc/article/view/dermatol-pract-concept-articleid-dp0803a07