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MacKellar DA, Gallagher KM, Finlayson T, Sanchez T, Lansky A, Sullivan PS.MacKellar DA, et al. Among authors: sullivan ps.Public Health Rep. 2007;122 Suppl 1(Suppl 1):39-47. doi: 10.1177/00333549071220S107.Public Health Rep. 2007.PMID: 17354526Free PMC article.
Mackellar DA, Hou SI, Whalen CC, Samuelsen K, Sanchez T, Smith A, Denson D, Lansky A, Sullivan P; WHBS Study Group.Mackellar DA, et al.Sex Transm Dis. 2011 May;38(5):419-28. doi: 10.1097/OLQ.0b013e31820369dd.Sex Transm Dis. 2011.PMID: 21183863