Tag Archives: mitral valve calcification

René Théophile Hyacinthe Laënnec and the stethoscope

Philip R. Liebson Chicago, Illinois, United States Laennec examines a consumptive patient with a stethoscope in front of his students at the Necker Hospital, 1816 Théobald Chartran   What constitutes a high-tech instrument? Obviously, in the field of medicine, one that has been developed to improve evaluation of a given condition and lead to a […]