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*METR LIF, 1986, STAT B, V67, P2
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*NAT CTR HLTH STAT, 1986, BIRTHS MARR DIV DEAT, V34, P12
[4]
*NAT CTR HLTH STAT, 1986, PHS861250, V127
[5]
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PLACEK PJ, 1980, PUBLIC HEALTH REP, V95, P540
[8]
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