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Yeatman SE, Potter JE, Grossman DA.Yeatman SE, et al.Stud Fam Plann. 2006 Sep;37(3):197-204. doi: 10.1111/j.1728-4465.2006.00098.x.Stud Fam Plann. 2006.PMID: 17002198
Potter JE, White K, Hopkins K, Amastae J, Grossman D.Potter JE, et al. Among authors: grossman d.Am J Public Health. 2010 Jun;100(6):1130-6. doi: 10.2105/AJPH.2009.179887. Epub 2010 Apr 15.Am J Public Health. 2010.PMID: 20395571Free PMC article.