Zafer Isilak1, Mehmet Tezcan2, Murat Atalay3, Ejder Kardesoglu1. 1. Department of Cardiology, Gulhane Military Medical Academy, Haydarpasa Training Hospital, Istanbul, Turkey. 2. Department of Cardiology, Gumussuyu Military Hospital, Istanbul, Turkey. Email: drmehmettezcan@gmail.com. 3. Department of Cardiology, Merzifon Military Hospital, Amasya, Turkey.