1. Department of Heart Diseases, Faculty of Health Sciences; Wroclaw Medical University Military Hospital; ul. Weigla 5 50-981 Wroclaw Poland
2. Centre for Heart Disease; Military Hospital; Wroclaw Poland
3. Institute of Anthropology, Polish Academy of Sciences; Wroclaw Poland
4. Department of Physiology; Wroclaw Medical University; Wroclaw Poland
5. Cardiac Medicine, Royal Brompton Hospital; National Heart and Lung Institute, Imperial College London; London UK