Am J Public Health Nations Health. 1930 May;20(5):519-20. doi: 10.2105/ajph.20.5.519.
American journal of public health and the nation's health
[No authors listed]
PMID: 18013015 PMCID: PMC1555846 DOI: 10.2105/ajph.20.5.519
[No abstract available.]