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Citation |
Simon J, Levensohn A, Metzger BB, Hardman SB, Klein SJ. Am. J. Public Health 1993; 83(12): 1787-1788. |
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Copyright |
(Copyright © 1993, American Public Health Association) |
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DOI |
unavailable |
PMID |
8259818 |
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PMCID |
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Abstract |
unavailable. |