1. Program in Membrane Biology, Division of Nephrology, Center for Systems Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA;
2. Foundation Istituto Di Ricovero e Cura a Carattere Scientifico Ca' Granda, University of Milan, Milan, Italy;
3. Center for Hemochromatosis, University Hospital of Modena and Reggio Emilia, Modena, Italy;
4. Departamento de Bioquimica y Biologia Molecular, Instituto Universitario de Oncologia, Universidad de Oviedo, Oviedo, Spain;
5. Laboratory of Mineralized Tissues, School of Medicine, University of Zagreb, Zagreb, Croatia;
6. Research Medicine, Veterans Affairs Tennessee Valley Healthcare System, Division of Cardiovascular Medicine, Vanderbilt University School of Medicine, Nashville, TN; and
7. Pharmaceutical Institute, University of Bonn, Bonn, Germany