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Slatore CG, Littman AJ, Au DH, Satia JA, White E.Slatore CG, et al. Among authors: littman aj.Am J Respir Crit Care Med. 2008 Mar 1;177(5):524-30. doi: 10.1164/rccm.200709-1398OC. Epub 2007 Nov 7.Am J Respir Crit Care Med. 2008.PMID: 17989343Free PMC article.
White E, Patterson RE, Kristal AR, Thornquist M, King I, Shattuck AL, Evans I, Satia-Abouta J, Littman AJ, Potter JD.White E, et al. Among authors: littman aj.Am J Epidemiol. 2004 Jan 1;159(1):83-93. doi: 10.1093/aje/kwh010.Am J Epidemiol. 2004.PMID: 14693663
Littman AJ, White E, Kristal AR, Patterson RE, Satia-Abouta J, Potter JD.Littman AJ, et al.Epidemiology. 2004 Jan;15(1):105-13. doi: 10.1097/01.ede.0000091604.32542.97.Epidemiology. 2004.PMID: 14712154