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Kuhn C 3rd, Boldt J, King TE Jr, Crouch E, Vartio T, McDonald JA.Kuhn C 3rd, et al.Am Rev Respir Dis. 1989 Dec;140(6):1693-703. doi: 10.1164/ajrccm/140.6.1693.Am Rev Respir Dis. 1989.PMID: 2604297