1. Institute of Cardiology named after L.A. Hovhannisyan, P. Sevak 5, Yerevan, Armenia
2. Armenian Medical Association, H. Tumanyan 38/9, Yerevan, Armenia
3. Center of Preventive Cardiology, P. Sevak 5, Yerevan, Armenia
4. Imperial Clinical Trials Unit, Imperial College London, Stadium House, 68 Wood Lane, London, UK