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Heffner JE, Miller KS, Sahn SA.Heffner JE, et al. Among authors: sahn sa.Chest. 1986 Sep;90(3):430-6. doi: 10.1378/chest.90.3.430.Chest. 1986.PMID: 3527584No abstract available.
Heffner JE, Miller KS, Sahn SA.Heffner JE, et al. Among authors: sahn sa.Chest. 1986 Aug;90(2):269-74. doi: 10.1378/chest.90.2.269.Chest. 1986.PMID: 3731901No abstract available.