Am J Public Health Nations Health. 1929 Mar;19(3):304-5. doi: 10.2105/ajph.19.3.304.
American journal of public health and the nation's health
[No authors listed]
PMID: 18012703 PMCID: PMC1581008 DOI: 10.2105/ajph.19.3.304
[No abstract available.]