Tangjittrong K. Changes in serum 25-hydroxyvitamin D and intact parathyroid hormone level following treatment with ergocalciferol among patients with chronic kidney disease. J Nephrol Soc Thail [Internet]. 2022 Aug. 25 [cited 2024 May 20];28(1):62-7. Available from: https://he01.tci-thaijo.org/index.php/JNST/article/view/258860