1. Department of Biostatistical SciencesWake Forest School of MedicineWinston‐SalemNCUSA
2. Pennington Biomedical Research CenterBaton RougeLAUSA
3. Departrment of MedicineJohns Hopkins School of MedicineBaltimoreMDUSA
4. Department of Internal MedicineWake Forest School of MedicineWinston‐SalemNCUSA
5. Department of Psychiatry and Behavioral MedicineWake Forest School of MedicineWinston‐SalemNCUSA
6. Department of Social Sciences and Health PolicyWake Forest School of MedicineWinston‐SalemNCUSA
7. Department of Preventive MedicineUniversity of Tennessee Health Science CenterMemphisTNUSA
8. Departments of Epidemiology and NeurologyMayo ClinicRochesterMNUSA