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S. Usman
B.H. Kahrs
H. Barton
T.M. Eggeb
C. Lees
Queen Charlottes' and Chelsea Hospital, Imperial College London, London, United Kingdom
National Centre for Fetal Medicine, St Olavs Hospital, Trondheim, Norway
Queen Charlottes' and Chelsea Hospital, Imperial College London, London, United Kingdom
United Kingdom
Norway
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Body mass index
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