1. Departments of Pediatrics and Internal MedicineUniversity of Texas Southwestern and Children's Medical Center Dallas Texas USA
2. Néphrologie, Dialyse, Hypertension Artérielle et Exploration Fonctionnelle Rénale, Groupement Hospitalier Edouard HerriotHospices Civils de Lyon Lyon France
3. Université Claude Bernard Lyon France
4. Universidade de Caxias do Sul Caxias do Sul Brazil
5. Coordenação de Aperfeiçoamento do Pessoal de Nível Superior (CAPES) Brasilia Brazil
6. Department of Population Health Sciences and Duke Clinical Research InstituteDuke University School of Medicine Durham North Carolina USA