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Rohrbach LA, Howard-Pitney B, Unger JB, Dent CW, Howard KA, Cruz TB, Ribisl KM, Norman GJ, Fishbein H, Johnson CA.Rohrbach LA, et al. Among authors: unger jb.Am J Public Health. 2002 Jun;92(6):975-83. doi: 10.2105/ajph.92.6.975.Am J Public Health. 2002.PMID: 12036792Free PMC article.