1. The University of Texas School of Public Health
2. the University of Texas Medical School at Houston
3. Baylor College of Medicine
4. St. Luke's Episcopal Hospital, Houston, Texas
5. National Institute of Cholera and Enteric Diseases, Kolkata, India
6. Goa Medical College, Bambolim Goa, India
7. Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
8. Institute of Social and Preventive Medicine of the University of Zurich, Zurich, Switzerland