Long-term effect of 1,25-dihydroxy-22-oxavitamin D3 on secondary hyperparathyroidism in haemodialysis patients.: One-year administration study

(1)Center of Blood Purification Therapy, Wakayama Medical University, Wakayama, Japan, Department of Internal Medicine, Shinrakuen Hospital, Niigata Social Services Organization, Social Welfare Department, Niigata, Japan, (3)Division of Blood Purification and Medicine, Kidney Center, Tokyo Women's Medical University, Tokyo, Japan, (4)Metabolism and Endocrinologic Medicine, Osaka City University Postgraduate School of Medicine, Biostatistics for the Health and Nursing Sciences Section, Medical Research Department, University of Tokyo, Tokyo, Japan, (6)Foundation for Cancer Research Hospital, Tokyo, Japan, Renal Division, Washington University School of Medicine, St Louis, Missouri, USA and (8)Tokai University School of Medicine, Isehara, Japan.