Am J Public Health Nations Health. 1950 Aug;40(8):1009-10. doi: 10.2105/ajph.40.8.1009.
American journal of public health and the nation's health
[No authors listed]
PMID: 18017224 PMCID: PMC1528814 DOI: 10.2105/ajph.40.8.1009
[No abstract available.]