Hyperparathyroidism, Secondary

• Department of Medicine, Division of Cardiology, Pulmonary Diseases and Vascular Medicine at the University Hospital, RWTH Aachen — Aachen, North Rhine-Westphalia, Germany
• Clinic for Nephrology and Diabetology, Hospital St. Franziskus (Maria-Hilf-Clinic) — Mönchengladbach, North Rhine-Westphalia, Germany

Not specified

• Nooshin Dalili — Tehran, Iran

• Manchester University NHS Foundation Trust — Manchester, United Kingdom

• Department of Nephrology, Hypertension and Kidney Transplantation — Lodz, Poland

• Showa University — Shinagawa, Tokyo, Japan

• Hospital Universitario Reina Sofía — Córdoba, Spain

• Iain Bressendorff — Hillerød, Denmark

• University of Kentucky — Lexington, Kentucky, United States

• Indiana University School of Medicine — Indianapolis, Indiana, United States