External validity: We need to do more.
Glasgow, Russell E. Ph.D. 1; Green, Lawrence W. Dr.PH 3; Klesges, Lisa M. Ph.D. 4; Abrams, David B. Ph.D. 5; Fisher, Edwin B. Ph.D. 6; Goldstein, Michael G. M.D. 7; Hayman, Laura L. Ph.D., R.N., F.A.A.N. 8; Ockene, Judith K. Ph.D. 9; Tracy Orleans, C. Ph.D. 10
Annals of Behavioral Medicine.
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