From the Centers for Disease Control.
| Autor: | Morris, J. G., West, G. R., Holck, S. E., Blake, P. A., Echeverria, P. D., Karaulnik, M. |
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| Zdroj: | Journal of Infectious Diseases; 1981, Vol. 145 Issue 1, p131-134, 4p |
| Databáze: | Complementary Index |
| Externí odkaz: |
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