Challenging employees to health:  an incentive contest approach.
Health Promotion Services, University of Texas-Houston Health Science Center.
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Jasheway
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Sirota
D003163:Competitive Behavior; D015438:Health Behavior; D006293:Health Promotion / Q000379:methods*; D006801:Humans; D009042:Motivation; D009786:Occupational Health Services; D015397:Program Evaluation