M. Al-Layla, Alaa, and Talal S. Al-Najafi. 2006. “Parathyroid Hormone and Some Biochemical Parameters Level in Sera of Renal Failure Patients Undergoing Hemodialysis”. Rafidain Journal of Science 17 (8):17-28. https://doi.org/10.33899/rjs.2006.43463.