1. Division of Respiratory Disease Studies; National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention; Morgantown West Virginia
2. Epidemic Intelligence Service, Division of Scientific Education and Professional Development; Centers for Disease Control and Prevention; Atlanta Georgia
3. Western States Office, Oil and Gas Extraction Program; National Institute for Occupational Safety and Health Centers for Disease Control and Prevention; Denver Colorado
4. Health, Safety, and Environmental Division; Helmerich & Payne International Drilling Company; Tulsa Oklahoma
5. Office of the Director, Oil and Gas Sector Program; National Institute for Occupational Safety and Health Centers for Disease Control and Prevention; Morgantown West Virginia