Vitamin D Deficiency Ups Post-Transplant UTI Risk Renal and Urology News Young Eun Kwon, MD, of Yonsei University College of Medicine in Seoul, Korea, and colleagues measured 25-hydrovitamin D3 levels (25(OH) D3) in 410 patients 2 weeks prior to undergoing renal transplantation. Of the 410 patients, 171 (41.7%) were ...