Bautista, R. L. S., R. A. B. Lopa, A. C. A. Cabungcal, A. P. C. Dela Cruz, and T. E. N. Lo. “Tumoral Calcinosis in Secondary Hyperparathyroidism”. Philippine Journal of Otolaryngology Head and Neck Surgery, vol. 31, no. 1, June 2016, pp. 48-52, doi:10.32412/pjohns.v31i1.319.