1. University at Buffalo, the State University of New York, Buffalo, New York, USA
2. University of Texas Medical Branch, Galveston, Texas, USA
3. Saint Louis University School of Medicine, St Louis, Missouri, USA
4. Central Queensland University, Rockhampton, Queensland, Australia, USA
5. National Public Health Institute, Helsinki, Finland, USA
6. Turku University Hospital, Turku, Finland, USA
7. Wakayama Medical University, Wakayama, Japan
8. Wake Forest University, Winston-Salem, North Carolina, USA
9. University of São Paulo, São Paulo, Brazil
10. Yale University, New Haven, Connecticut, USA