Joseph Erlanger (1874-1965) was a physician who trained at the Johns Hopkins University in Baltimore, taught at the Medical School at Washington University in St Louis, and won the Nobel Prize in Physiology or Medicine in 1944. According to the donor of this item, Dr. Erlanger used this type of sphygmomanometer in his studies of Korotkof sounds (sounds generated when a blood pressure cuff changes the flow of blood through the artery).
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