Ditkivskyy, I. O., O. A. Mazur, N. S. Yashchuk, B. V. Cherpak, and J. V. Yermolovych. “Endovascular Closure of Patent Foramen Ovale for Cryptogenic Stroke Prevention in Patients of Young Age”. Ukrainian Journal of Cardiovascular Surgery, no. 2 (31), May 2018, pp. 52-56, doi:10.30702/ujcvs/18.31/10(052-056).