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Xi LF, Koutsky LA, Castle PE, Wheeler CM, Galloway DA, Mao C, Ho J, Kiviat NB.Xi LF, et al. Among authors: castle pe.J Natl Cancer Inst. 2009 Feb 4;101(3):153-61. doi: 10.1093/jnci/djn461. Epub 2009 Jan 27.J Natl Cancer Inst. 2009.PMID: 19176451Free PMC article.
Massad LS, Jeronimo J, Katki HA, Schiffman M; National Institutes of Health/American Society for Colposcopy and Cervical Pathology Research Group.Massad LS, et al.J Low Genit Tract Dis. 2009 Jul;13(3):137-44. doi: 10.1097/LGT.0b013e31819308d4.J Low Genit Tract Dis. 2009.PMID: 19550210Free PMC article.
Schiffman M, Wentzensen N, Wacholder S, Kinney W, Gage JC, Castle PE.Schiffman M, et al. Among authors: castle pe.J Natl Cancer Inst. 2011 Mar 2;103(5):368-83. doi: 10.1093/jnci/djq562. Epub 2011 Jan 31.J Natl Cancer Inst. 2011.PMID: 21282563Free PMC article.Review.