Howard Wilcox Haggard (July 19, 1891 - April 22, 1959) was an American physician, physiologist and writer.
[2] During World War I he was a captain in the Chemical Warfare Service in the United States Army.
At Yale University, he conducted research into cardiorespiratory physiology and with Yandell Henderson invented the H and H inhalator.
[1] He was an author of books on the history of medicine which received positive reviews.
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