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Dalavanga YA, Constantopoulos SH, Zerva LB, Trekli MM, Kotoulas OO, Moutsopoulos HM.Dalavanga YA, et al. Among authors: constantopoulos sh.Chest. 1992 Dec;102(6):1805-7. doi: 10.1378/chest.102.6.1805.Chest. 1992.PMID: 1446492