1. NOD Analytics, Charlotte, NC, USA
2. Lister Hospital, Stevenage, UK
3. Massachusetts General Hospital, Boston, MA, USA
4. Hospital Obrero #2—C.N.S., Universidad Mayor de San Simón—School of Medicine, Cochabamba, Bolivia
5. National Institute of Health El Salvador, San Salvador, El Salvador
6. Good Samaritan Medical Center, Brocton, MA, USA
7. The Ottawa Hospital, Ottawa, Canada
8. Central Northern Adelaide Renal and Transplant Service, Royal Adelaide Hospital, Adelaide, Australia
9. Asociación Mexicana Para El Estudio De La Acidosis Tubular Renal, A.C., Mexico City, Mexico