Mitral Valve Replacement

• University Hospital - Univ. of Alabama at Birmingham (UAB) — Birmingham, Alabama, United States
• Phoenix Cardiovascular Research Group — Phoenix, Arizona, United States
• Los Robles Regional Medical Center — Thousand Oaks, California, United States
• Piedmont Heart Institute — Atlanta, Georgia, United States

• Institute Dante Pazzanese of Cardiology - IDPC — São Paulo, Brazil
• The Heart Institute - INCOR — São Paulo, Brazil

• Beijing Anzhen Hospital, Capital Medical University — Beijing, Beijing Municipality, China
• Fuwai Hospital, CAMS & PUMC — Beijing, Beijing Municipality, China
• Xiamen Cardiovascular Hospital Xiamen University — Xiamen, Fujian, China
• Guangdong Provincial People's Hospital — Guangzhou, Guangdong, China

• Department of Biotechnological and Applied Clinical Sciences — L’Aquila, L'Aquila, Italy

• Assiut University Heart Hosiptal — Asyut, Egypt

• PIC Hospital, Lahore. — Lahore, Punjab Province, Pakistan

Not specified

• University of Alabama at Birmingham — Birmingham, Alabama, United States
• Arkansas Children's Hospital — Little Rock, Arkansas, United States
• Children's Hospital Los Angeles (USC) — Los Angeles, California, United States
• University of California - Davis Medical Center — Sacramento, California, United States

• Menoufia University Hospitals — Shibīn al Kawm, Menoufia, Egypt

• Suez Canal University — Ismailia, Egypt
• Suez Canal University — Ismailia, Egypt