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Yordanov A, Karamanliev M, Karcheva M, Konsoulova A, Vasileva-Slaveva M, Strashilov S.Yordanov A, et al.Medicina (Kaunas). 2019 Dec 9;55(12):780. doi: 10.3390/medicina55120780.Medicina (Kaunas). 2019.PMID: 31835382Free PMC article.