1. Moredun Research Institute, Penicuik, UK
2. Centers for Disease Control and Prevention, Atlanta, USA
3. University of Oxford, Oxford, UK
4. Arizona State University, Tempe, USA
5. Perelman School of Medicine at the University of Pennsylvania, Philadelphia, USA
6. East Carolina University, Greenville, USA
7. The University of Alberta, Edmonton, Canada
8. Cidade Universitária da Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
9. University of Cape Town, Cape Town, South Africa
10. University of Otago, Dunedin, New Zealand
11. UAB School of Medicine, Birmingham, USA