1. Department of MedicineUniversity of Pittsburgh Medical CenterPittsburghPAUSA
2. Division of RheumatologyDepartment of MedicineUniversity of Pittsburgh Medical CenterPittsburghPAUSA
3. Department of PathologyUniversity of Pittsburgh Medical CenterPittsburghPAUSA
4. Division of CardiologyDepartment of MedicineUniversity of Pittsburgh Medical CenterPittsburghPAUSA