Citation

Densen PM, Ullman DB, Jones EW, Vandow JE. Public Health Rep. (1896) 1970; 85(11): 981-996.

Copyright

(Copyright © 1970, U.S. Public Health Service)

DOI

unavailable

PMID

4990883

PMCID

PMC2031795

Abstract

[Abstract unavailable]

Language: en