| Elevated maternal urine level of @b-core fragment of human chorionicgonadotropin versus serum triple test in the second-trimester detection ofDown syndrome |
Bahado-Singh, R.;Oz, U.;Rinne, K.;Hunter, D.;Cole, L.;Mahoney, M.J.;Baumgarten, A.; |
American Journal of Obstetrics and Gynecology |
1999-10-01 |
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