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Chen Y, Mai XM.Chen Y, et al. Among authors: mai xm.J Asthma. 2011 Jun;48(5):490-4. doi: 10.3109/02770903.2011.570404. Epub 2011 Apr 13.J Asthma. 2011.PMID: 21486195
Mai XM, Chen Y, Camargo CA Jr, Langhammer A.Mai XM, et al.Am J Epidemiol. 2012 May 15;175(10):1029-36. doi: 10.1093/aje/kwr456. Epub 2012 Feb 6.Am J Epidemiol. 2012.PMID: 22312120
Brumpton B, Langhammer A, Romundstad P, Chen Y, Mai XM.Brumpton B, et al. Among authors: mai xm.Eur Respir J. 2013 Feb;41(2):323-9. doi: 10.1183/09031936.00012112. Epub 2012 May 31.Eur Respir J. 2013.PMID: 22653771Free article.
Mai XM, Langhammer A, Chen Y, Camargo CA Jr.Mai XM, et al.Thorax. 2013 Jan;68(1):25-30. doi: 10.1136/thoraxjnl-2012-202061. Epub 2012 Sep 12.Thorax. 2013.PMID: 22977130
Mai XM, Langhammer A, Camargo CA Jr, Chen Y.Mai XM, et al.Am J Epidemiol. 2012 Dec 15;176(12):1169-76. doi: 10.1093/aje/kws235. Epub 2012 Dec 2.Am J Epidemiol. 2012.PMID: 23204497