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Smith DE, Marcus MD, Lewis CE, Fitzgibbon M, Schreiner P.Smith DE, et al.Ann Behav Med. 1998 Summer;20(3):227-32. doi: 10.1007/BF02884965.Ann Behav Med. 1998.PMID: 9989331
Lewis CE, Jacobs DR Jr, McCreath H, Kiefe CI, Schreiner PJ, Smith DE, Williams OD.Lewis CE, et al. Among authors: schreiner pj.Am J Epidemiol. 2000 Jun 15;151(12):1172-81. doi: 10.1093/oxfordjournals.aje.a010167.Am J Epidemiol. 2000.PMID: 10905529