1 Department of Cardiothoracic and Vascular SurgeryMcGovern Medical SchoolThe University of Texas Health Science Center 6400 Fannin St, Ste 2850, Houston, TX 77030. Electronic address: mehmet.alagoz@uth.tmc.edu.
2 Cardiovascular Surgery DepartmentBalıkesir University Medical SchoolBalıkesir, Turkey.