Epidemiology of trisomy 21: A review and theoretical analysis
Janerich D, Bracken M. Epidemiology of trisomy 21: A review and theoretical analysis. Journal Of Clinical Epidemiology 1986, 39: 1079-1093. PMID: 2947908, DOI: 10.1016/0021-9681(86)90141-4.Peer-Reviewed Original Research