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Demirtaş H, Parpar T, Değirmenci B, Kara M, Çelik AO, Umul A, Kayan M, Yılmaz Ö.Demirtaş H, et al. Among authors: celik ao.Radiol Med. 2016 Dec;121(12):916-925. doi: 10.1007/s11547-016-0678-6. Epub 2016 Aug 29.Radiol Med. 2016.PMID: 27573129
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Barış MM, Gezer NS, Çelik AO, Kılınç O, Balcı P.Barış MM, et al. Among authors: celik ao.Clin Respir J. 2017 May;11(3):391-393. doi: 10.1111/crj.12345. Epub 2015 Aug 3.Clin Respir J. 2017.PMID: 26177792
Baris MM, Celik AO, Gezer NS, Ada E.Baris MM, et al. Among authors: celik ao.Clin Neurol Neurosurg. 2016 Sep;148:67-71. doi: 10.1016/j.clineuro.2016.07.008. Epub 2016 Jul 4.Clin Neurol Neurosurg. 2016.PMID: 27428485