Corresponding author
Yun Seok Kim, MD, PhD
Department of Thoracic and Cardiovascular Surgery, Keimyung University
Dongsan Hospital, 1035, Dalgubeol-daero, Dalseo-gu, Daegu, Republic of
Korea.
E-mail:yunseok99@hanmail.net, Tel:
82-53-258-4783.
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