1. Harvard School of Public Health; Boston Massachusetts
2. Emory University Rollins School of Public Health, Department of Behavioral Sciences and Health Education; Atlanta Georgia
3. New England Research Institutes; Watertown Massachusetts
4. Dana-Farber Cancer Institute; Boston Massachusetts
5. Laborers' Health and Safety Fund of North America; Washington District of Columbia
6. Department of Physical Therapy, Movement and Rehabilitation Sciences; Bouve College of Health Sciences, Northeastern University; Boston Massachusetts