A description of the social-ecological framework used in the trial of activity for adolescent girls (TAAG).
J. Elder, L. Lytle, J. Sallis, D. Young, A. Steckler, D. Simons-Morton, E. Stone, J. Jobe, J. Stevens, T. Lohman, L. Webber, R. Pate, B. Saksvig, K. Ribisl
Health Education Research