Word: toed
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Dates: during 1920-1929
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Irradiated cod-liver oil, found to be more effective than untreated cod-liver oil.
Medical fees studied and attempts made to provide medical care for average incomes.
Machines invented to record every change in the heart rate over long periods.
Cyclopropane anesthetic, a new gas similar to nitrous oxide, discovered.
Sleep found to be on a level with the body's vegetative reflex functions.