State-specific variation in rates of twin births--United States, 1992-1994 (Q73099669)
scientific article published on 01 February 1997
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(P577) Saturday, February 1, 1997
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(P1476) "State-specific variation in rates of twin births--United States, 1992-1994" (language: en)
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description scientific article published on 01 February 1997

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