Normal and abnormal heart sounds (2)

Frontiers in Bioscience (original), Faculty of Medicine, Charles University, Prague, Czech Republic

Nutritional and Metabolic Diseases (2)

Washington University in St. Louis, Missouri, USA

Renal Medicine (2)

Journal, British Medical Journal Publishing Group, London, UK

Symptoms - Differential Diagnosis (2)

Tamer Fouad, Doctors Lounge, South Dakota, USA

The Cardiac Cycle (2)

Alila Le, Alila Medical Media

Thyroid Disease Manager (2)

Thyroid Disease Manager, Chicago, IL, USA