Implementation effectiveness trial of a social influences smoking prevention program using schools and television von Flay, Brian R., Hansen, William B., Johnson, C.Anderson, Collins, Linda M., Dent, Clyde W., Dwyer, Kathleen M., Grossman, Linda, Hockstein, Gianna, Rauch, Jill, Sobel, Judy L., Sobol, Debra F., Sussman, Steve, Ulene, Arthur

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