TY - GEN AU - Hashishe,M M TI - Down syndrome and maternal age: changes over time and review of risk factors SN - 0013-2446 PY - 2007///0201 KW - Adult KW - Age Factors KW - Birth Order KW - Down Syndrome KW - epidemiology KW - Egypt KW - Female KW - Humans KW - Incidence KW - Infant, Newborn KW - Male KW - Maternal Age KW - Pregnancy KW - Retrospective Studies N1 - Publication Type: Journal Article ER -