Signs and Symptoms, Respiratory

• Wake Forest University Baptist Medical Center, Department of Cardiology — Winston-Salem, North Carolina, United States
• Medical University of South Carolina and Ralph H. Johnson VA Medical Center — Charleston, South Carolina, United States

• Laboratorio Ricerche Cardiologiche. Istituto Auxologico Italiano. Ospedale S. Luca. Via Spagnoletto, 3. Regina Margherita Hut (Monte Rosa, Italian Alps, 4559 m) — Milan, Italy

• University of North Carolina at Chapel Hill — Chapel Hill, North Carolina, United States

• Universidad Peruana Cayetano Heredia — Lima, Peru

• Faculdade Evangelica do Paraná — Curitiba, Paraná, Brazil

• Seoul National University Hospital — Seoul, South Korea

• Beth Israel Deaconess Medical Center, Harvard Medical School — Boston, Massachusetts, United States

• National Jewish Medical and Research Center — Denver, Colorado, United States
• Duke University Medical Center — Durham, North Carolina, United States
• Hospital St. Marguerite — Marseille, France
• Thoraxklinik at Heidelberg University — Heidelberg, Germany

• Baylor College of Medicine — Houston, Texas, United States

Not specified