1. The relationship between modifiable health risks and group-level health care expenditures;Anderson;Am. J. Health Promot.,2000
2. Musculoskeletal Disorders and the Workplace: Low Back and Upper Extremities;Berqvist,1995
3. Physical activity: optimizing practice through research;Kottke;Am. J. Prev. Med.,2006
4. An ecological perspective on health promotion programs;McLeroy;Health Educ. Quart.,1988
5. National Institute for Occupational Safety and Health (NIOSH) 2008. WorkLife Initiative. Essential elements of effective workplace programs and policies for improving worker health and wellbeing. Available on www.cdc.gov/niosh/worklife. (Accessed 11/1/2008).