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Kanner RE, Anthonisen NR, Connett JE; Lung Health Study Research Group.Kanner RE, et al. Among authors: connett je.Am J Respir Crit Care Med. 2001 Aug 1;164(3):358-64. doi: 10.1164/ajrccm.164.3.2010017.Am J Respir Crit Care Med. 2001.PMID: 11500333Clinical Trial.
Anthonisen NR, Lindgren PG, Tashkin DP, Kanner RE, Scanlon PD, Connett JE; Lung Health Study Research Group.Anthonisen NR, et al. Among authors: connett je.Eur Respir J. 2005 Jul;26(1):45-51. doi: 10.1183/09031936.05.00102604.Eur Respir J. 2005.PMID: 15994388Free article.