Baysal M, Demir S, Ümit G. E, Gürkan H, Baş V, Gülsaran Karaman S, Demirci U, Kırkızlar Onur H, Demir Muzaffer A. Genetic Diagnosis of Hereditary Hemorrhagic Telangiectasia: Four Novel Pathogenic Variations in Turkish Patients. Balkan Med J 2020;37:43-46