Simmons, Brian James, Brian S Hoyt, Konstantinos Linos, Shaofeng Yan, and Kathryn A Zug. “Crospovidone Induced Vasculopathy of the Skin”. SKIN The Journal of Cutaneous Medicine 3, no. 5 (September 13, 2019): 348-349. Accessed October 27, 2020. https://jofskin.org/index.php/skin/article/view/510.