Effects of Oral or Parenteral Vitamin D Supplementation on Kidney Function, Blood Concentrations of 25-Hydroxyvitamin D, and Parathyroid Hormone Levels. - Atar, Sevgi; Demirhan, Esma; Hüner, Berrin; Aydın, Tuğba; Dikker, Okan; Kuru, Ömer (European Archives of Medical Research, 2021)