Hu, Yan, et al. “Parathyroid Adenoma Arising from Autotransplanted Parathyroid Tissue in Sternocleidomastoid Muscle: A Case Report With Review of the Literature”. North American Journal of Medicine and Science, vol. 8, no. 2, Apr. 2015, https://www.najms.com/index.php/najms/article/view/57.