Renal Insufficiency, Chronic

• Clinical Research Center for Rare Diseases — Ranica, Bergamo, Italy
• Azienda Ospedaliera "Bianchi-Melacrino-Morelli" c/o Ospedali Riuniti U.O. Nefrologia, Dialisi e Trapianto — Reggio Calabria, Italy

• Kingston General Hospital — Kingston, Ontario, Canada

Not specified

• Seoul St. Mary's Hospital — Seoul, Seocho-gu, South Korea

• Medical University of Gdansk — Gdansk, Pomeranian Voivodeship, Poland

• Royal Free Hospital — London, United Kingdom

• Meiyo Clinic — Toyohashi, Aichi-ken, Japan
• Asahi General Hospital — Asahi, Chiba, Japan
• Japanese Red Cross Koga Hospital — Koga, Ibaragi, Japan
• Sumiyoshi Clinic Hospital — Mito, Ibaragi, Japan

• Southwest Clinical Research Institute, LLC — Tempe, Arizona, United States
• California Institute of Renal Research — La Mesa, California, United States
• Denver Nephrology — Denver, Colorado, United States
• Clinical Advancement Center, PLLC — San Antonio, Texas, United States

• Department of Odontology, Faculty of Health Sciences, University of Copenhagen — Copenhagen, Denmark

• University of Alabama — Birmingham, Alabama, United States