UK Data Service variable record for:
| Variable | bbt7 | ||||||||||||||||||||||||
| Label | SP.BIF TEST; HOW COME TO HAVE IT | ||||||||||||||||||||||||
| Responses |
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| Disclaimer | Please note that these frequencies are not weighted. | ||||||||||||||||||||||||
| Location | Cambridge Prenatal Screening Study : Sickle Cell Study, 1991-1992 |