1. Johnson & Johnson Healthcare Systems, New Brunswick, NJ, USA
2. OhioHealth Group, Columbus, OH, USA
3. UPMC WorkPartners, Pittsburgh, PA, USA
4. Centers for Disease Control and Prevention, Atlanta, GA, USA
5. Alliant Employee Benefits, Atlanta, GA, USA
6. Health Enhancement Research Organization, Waconia, MN, USA
7. Employee Benefit Solutions, Boston, MA, USA