By Sundby J.   in The Lancet

ISSN:0140-6736|362|1|26-27

Elsevier‎(2003)‎

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By Vangen S.   Johansen R.E.B.   Sundby J.   Traeen B.   Stray-Pedersen B.   in European Journal of Obstetrics and Gynecology and Reproductive Biology

ISSN:0301-2115|112|1|29-35

Elsevier‎(2004)‎

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