Costa, Catharine Marigo, et al. “Rheumatic Heart Disease in A Patient With Hypocomplementemic Urticarial Vasculitis: A Case Based-Review”. Archives of Clinical and Medical Case Reports, vol. 5, no. 2, Mar. 2021, pp. 261-70, https://fortunejournals.org/ojs/index.php/acmcr/article/view/22474.