Affiliation: | 1. Bernhard Baron Memorial Research Laboratories, Goldhawk Road, W60XG, London, UK 2. Institute of Obstetrics and Gynaecology University of London, Queen Charlotte's Hospital, Goldhawk Road, W6-XG, London, UK 4. Nutrition Department, National Institute for Research in Dairying, Shinfield, RG29AT, Reading, UK
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