A R M, KM VG, chandra J, BM R. A cross-sectional observational study of serum parathyroid hormone levels and its relation with severity and duration of heart failure. Int. J. Heal. Clin. Res. [Internet]. 2021Feb.9 [cited 2026Mar.7];4(3):123-6. Available from: https://ijhcr.com/index.php/ijhcr/article/view/893