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Papaioannou AI, Zakynthinos E, Kostikas K, Kiropoulos T, Koutsokera A, Ziogas A, Koutroumpas A, Sakkas L, Gourgoulianis KI, Daniil ZD.Papaioannou AI, et al. Among authors: kostikas k.BMC Pulm Med. 2009 May 9;9:18. doi: 10.1186/1471-2466-9-18.BMC Pulm Med. 2009.PMID: 19426547Free PMC article.
Papageorgiou E, Kostikas K, Kiropoulos T, Karetsi E, Mpatavanis G, Gourgoulianis KI.Papageorgiou E, et al. Among authors: kostikas k.Chest. 2005 Nov;128(5):3291-7. doi: 10.1378/chest.128.5.3291.Chest. 2005.PMID: 16304274