1. Department of Cardiology, Hospital Nacional Edgardo Rebagliati Martins, Lima, Peru
2. San Fernando Medical School, Universidad Nacional Mayor de San Marcos, Lima, Peru
3. Department of Internal Medicine, Olive View-UCLA Medical Center, Los Angeles, USA, CA
4. Department of Internal Medicine, Hospital Distrital Walter Cruz Vilca, Trujillo, Peru
5. Department of Cardiology, OSF St Francis University of Illinois at Peoria, Peoria, USA, IL