Chronic Kidney Disease (stages 4 and 5)

• Hospital Universitario Dr. José E. González, Centro Regional de Enfermedades Renales (CRER) — Monterrey, Nuevo León, Mexico

• Mass General Brigham — Boston, Massachusetts, United States

• Vanderbilt University Medical Center — Nashville, Tennessee, United States

• Arizona Kidney Disease and Hypertension Center — Phoenix, Arizona, United States

• British Centre For Regenerative medicine BCRMED Global — Giza, GZ, Egypt

• Centre de néphrologie et de transplantation rénale — Marseille, France

• Family Health Unit 1 - ULS Coimbra (Intervention) — Coimbra, Portugal
• Family Health Unit 2 - ULS Coimbra (Control) — Coimbra, Portugal

• Clinical Research Centre for Rare Diseases Aldo e Cele Daccò — Ranica, BG, Italy

Not specified

• University Medical Center Groningen — Groningen, Provincie Groningen, Netherlands