1. Division of Hematology; Department of Internal Medicine; Mayo Clinic; Rochester MN USA
2. Ematologia; Azienda Unità Sanitaria Locale-IRCCS di Reggio Emilia; Reggio Emilia Italy
3. Department of Internal Medicine; University of Iowa and Iowa City Veterans Affairs Medical Center; Iowa City IA USA
4. Department of Internal Medicine; University of Iowa; Iowa City IA USA
5. Department of Health Sciences Research; Mayo Clinic; Rochester MN USA
6. Department of Laboratory Medicine & Pathology; Mayo Clinic; Rochester MN USA
7. Department of Internal Medicine; Mayo Clinic; Rochester MN USA
8. Department of Health Sciences Research; Mayo Clinic; Jacksonville FL USA