STEVIE GRAND / SCIENCE PHOTO LIBRARY STEVIE GRAND / SCIENCE PHOTO LIBRARY
Chest examination. General practice doctor presses a stethoscope onto the chest of a young girl. A stethoscope is used to hear sounds made by the heart and lungs. Abnormalities of the heartbeat may be a sign of various heart disorders. Abnormal breathing may be caused by respiratory problems such as asthma or bronchitis.
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