1. Department of Cardiology, Siyami Ersek Thoracic and Cardiovascular Surgery Training and Research Hospital, Istanbul, Turkey;
2. Department of Internal Medicine, Göztepe Training and Research Hospital, Istanbul Medeniyet University, Istanbul, Turkey;
3. Department of Cardiology, Sultan Abdulhamid Han Training and Research Hospital, Istanbul, Turkey;
4. Department of Dermatology, Kafkas University, Kars, Turkey