Smith-Ray, Renae L.Mama, ScherezadeReese-Smith, Jacqueline Y.Estabrooks, Paul A.Lee, Rebecca E.Abstract available at publisher's web site.NutritioninterventionsstudiesGroup processesMediationPhysical activityAfrican AmericansHispanic AmericansImproving Participation Rates for Women of Color in Health Research: The Role of Group CohesionArticle