A Berger. Show Affiliations »
Abstract
Mesh: See more » Down Syndrome/diagnosisGestational AgeHumansNeck/embryologyPrenatal Diagnosis/methods
Year: 1999 PMID: 9880279 PMCID: PMC1114626 DOI: 10.1136/bmj.318.7176.81a
Source DB: PubMed Journal: BMJ ISSN: 0959-8138