title: Re: "parity and the risk of Down's syndrome".
authors.forename: Chang-Jiang
authors.initials: CJ
authors.lastname: Zheng
mesh_terms: D015984:Causality; D004314:Down Syndrome / Q000453:epidemiology / Q000209:etiology; D005260:Female; D006801:Humans; D016015:Logistic Models; D009030:Mosaicism / Q000235:genetics; D009154:Mutation / Q000235:genetics; D011247:Pregnancy; D017584:Reproductive History; D012307:Risk Factors; D014178:Translocation, Genetic / Q000235:genetics