1. Department of Cardiovascular Surgery, School of Medicine, Balıkesir University, Bigadic, 10010 Balıkesir, Turkey
2. Department of Cardiovascular Surgery, Samsun Hospital for Education and Research, İlkadım, 55090 Samsun, Turkey
3. Department of Cardiovascular Surgery, Medical Park Usak Hospitals, 64000 Usak, Turkey
4. Department of Cardiovascular Surgery, Acıbadem Bursa Hospital, 16110 Bursa, Turkey