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*035  $a(NO-TrBIB)071825541
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*040  $aNO-TrBIB$bnob$ekatreg
*1001 $aLiestøl, Knut$d1949-$0(NO-TrBIB)90064340$_62440100
*24510$aMenarcheal age and spontaneous abortion :$ba causal connection?$cKnut Liestøl
*260  $c1980
*300  $aS. 753-758
*7730 $tAmerican journal of epidemiology (trykt utg.).$dBaltimore : Johns Hopkins University. School of Hygiene and Public Health$g111(1980)no 6$x0002-9262$w999101319534702201$w(NO-LaBS)16005(tnr)
*901  $a80
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^