TY - GEN AU - Castilla,E E AU - Paz,J E TI - Parity and Down's syndrome SN - 0140-6736 PY - 1995///0105 KW - Adult KW - Down Syndrome KW - epidemiology KW - Female KW - Humans KW - Maternal Age KW - Middle Aged KW - Parity KW - Pregnancy KW - Risk Factors N1 - Publication Type: Letter UR - https://doi.org/10.1016/s0140-6736(94)90444-8 ER -