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Pizzichini E, Pizzichini MM, Kidney JC, Efthimiadis A, Hussack P, Popov T, Cox G, Dolovich J, O'Byrne P, Hargreave FE.Pizzichini E, et al.Eur Respir J. 1998 Apr;11(4):828-34. doi: 10.1183/09031936.98.11040828.Eur Respir J. 1998.PMID: 9623684Free article.