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First trimester maternal serum AFP and total hCG in aneuploidies other than trisomy 21.
Spencer K, Heath V, Flack N, Ong C, Nicolaides KH.
Prenat Diagn 2000;20:635-9. -
Maternal thyroid function in multifetal pregnancies before and after fetal reduction.
Ogueh O, Hawkins AP, Abbas A, Carter GD, Nicolaides KH, Johnson MR.
J Endocrin 2000;164:7-11.