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Lawrence M, Wolfe J, Webb DR, Chervinsky P, Kellerman D, Schaumberg JP, Shah T.Lawrence M, et al. Among authors: wolfe j.Am J Respir Crit Care Med. 1997 Sep;156(3 Pt 1):744-51. doi: 10.1164/ajrccm.156.3.9608058.Am J Respir Crit Care Med. 1997.PMID: 9309988Clinical Trial.