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Sallis JF, Prochaska JJ, Taylor WC, Hill JO, Geraci JC.Sallis JF, et al. Among authors: prochaska jj.Health Psychol. 1999 Jul;18(4):410-5. doi: 10.1037//0278-6133.18.4.410.Health Psychol. 1999.PMID: 10431943