1. McMaster University; Hamilton, Canada
2. Hamilton Regional Laboratory Medicine Program; Hamilton, Canada
3. Universitaetsklinikum; Freiburg, Germany
4. National Center for Rare Diseases; Istituto Superiore di Sanità; Rome, Italy
5. National Research Council; Institute for Research on Population and Social Policies; Rome, Italy
6. National Research Council; Institute of Clinical Physiology; Lecce, Italy
7. Tufts Medical Center; Boston, MA USA
8. American University of Beirut; Beirut, Lebanon
9. University of Aberdeen; Aberdeen, UK
10. University of Florida; Gainesville, FL USA