Improving the people's health: some Hopkins' contributions.
Fee
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Department of Health Policy and Management, Johns Hopkins University School of Hygiene and Public Health, Baltimore, MD 21205.
D000818:Animals; D049673:History, 20th Century; D006801:Humans; D011634:Public Health / Q000266:history*; D051381:Rats; D012106:Research / Q000266:history*; D012279:Rickets / Q000266:history; D012581:Schools, Public Health / Q000266:history*; D014807:Vitamin D / Q000266:history
D014807:Vitamin D