Ashraf, H., M. M. Shafiq, S. Z. Ahmed, and T. Waseem. “Pre-Operative Parathyroid Gland Localization in Primary Hyperparathyroidism. A Systematic Literature Review.”. Archives of Surgical Research, vol. 1, no. 1, Mar. 2020, pp. 29-39, https://archivessr.com/index.php/asr/article/view/21.