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Dinh Xuan AT, Higenbottam TW, Scott JP, Wallwork J.Dinh Xuan AT, et al. Among authors: wallwork j.Respir Med. 1990 May;84(3):189-97. doi: 10.1016/s0954-6111(08)80033-9.Respir Med. 1990.PMID: 2218002Review.