TY  - JOUR
A1  - Šípek, A.
A1  - Gregor, V.
A1  - Horáček, J.
A1  - Chudobová, M.
T1  - Down syndrome in the Czech Republic during 1961-1997: Prevalence, prenatal diagnosis and maternal-age-specific rates
Y1  - 2001
JF  - Journal of Obstetrics & Gynaecology
VL  - 21
IS  - 3
SP  - 266
EP  - -269

ER  -