Darcan, Şükran, et al. “Persistent Elevated Serum Levels of Intact Parathyroid Hormone After Reoperation for Primary Hyperparathyroidism and After Pamidronate Therapy”. The Turkish Journal of Pediatrics, vol. 45, no. 3, July 2003, pp. 269-72, https://doi.org/10.24953/turkjpediatr.2003.2903.