N Wald, A Hackshaw. Show Affiliations »
Abstract
Entities: Disease
Mesh: See more » Chorionic Gonadotropin/analysisDown Syndrome/diagnosisFemaleFetal Diseases/diagnosisHumansPregnancyPrenatal Diagnosis/methods
Substances: See more » Chorionic Gonadotropin
Year: 1993 PMID: 8499838 PMCID: PMC1677646 DOI: 10.1136/bmj.306.6886.1198-c
Source DB: PubMed Journal: BMJ ISSN: 0959-8138