Valvular Heart Disease

• Pakistan Institute of medical sciences (PIMS) — Islamabad, Punjab Province, Pakistan

• University of California San Francisco — San Francisco, California, United States

• Department of Intensive Care, Bern University Hospital and University of Bern, Bern, Switzerland — Bern, Switzerland

• Instituto Nacional de Cardiología Ignacio Chávez — Tlalpan, Mexico City, Mexico

• William Beaumont Hospital — Royal Oak, Michigan, United States

• Clinique AXIUM Centre de cardiologie — Aix-en-Provence, France

• Center for Clinical Studies, Jena University Hospital — Jena, Thuringia, Germany

Not specified

• Department of Anesthesiology and Pain Medicine, Anesthesia and Pain Research Institute, Yonsei University College of Medicine — Seoul, South Korea

• Department of Anesthesiology and Pain Medicine, Yonsei University College of Medicine — Seoul, South Korea