Authors: Eiben, B Hammans, W Keuter, S Goebel, R Louwen, F Epplen, J

Citation: B. Eiben et al., A clinical study on the practicability of trisomy 21 - risk analysis in the first trimester of pregnancy, Z GEBU NEON, 205(3), 2001, pp. 94-98

Authors: Eiben, B Hammans, W Keuter, S Goebel, R Louwen, F Epplen, JT

Citation: B. Eiben et al., Maternal serum total hCG and free beta-hCG in the first trimester from trisomy 21 pregnancies, PRENAT DIAG, 20(9), 2000, pp. 771-772