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The use of free β-hCG in antenatal screening for Down's syndrome |
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| Authors: | K. Spencer J. N. Macri |
| Affiliation: | Endocrine Unit, Clinical Biochemistry Department, Oldchurch Hospital, Romford, Essex RM7 0BE, UK;NTD Laboratories Inc, 383 Old Country Road, Carle Place, New York 11514, USA. |
| Abstract: | |
| Keywords: | |