By Van Opstal D   Los F J   Ramlakhan S   Van Hemel J O   Van Den Ouweland A M   Brandenburg H   Pieters M H   Verhoeff A   Vermeer M C   Dhont M   In't Veld P A   in Human Reproduction

ISSN:1460-2350|12|4|682-686

Oxford University Press‎(1997)‎

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