Calcium Metabolism Disorders

• Istanbul University, Istanbul Faculty of Medicine, Department of Internal Medicine, Division of Endocrinology and Metabolism — Istanbul, Turkey (Türkiye)

• Department of Nephrology, University Clinical Center — Skopje, North Macedonia

• Department of Nephrology, Monash Medical Centre — Clayton, Victoria, Australia

Not specified

• L. Sacco Hospital (Vialba) — Milan, MI, Italy

• Ramathibodi Hospital — Phayathai, Bangkok, Thailand

• Division of Nephrology, Department of Internal Medicine, Istanbul Faculty of Medicine, Istanbul University — Istanbul, Turkey (Türkiye)

• Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University — Boston, Massachusetts, United States

• VA Puget Sound Health Care System — Seattle, Washington, United States

• Washington University Medical Center — St Louis, Missouri, United States