title: The expanded amnion sign: evidence of early embryonic death.
authors.forename: Joseph R
authors.initials: JR
authors.lastname: Wax
authors.forename: Michael G
authors.initials: MG
authors.lastname: Pinette
authors.forename: Roy A
authors.initials: RA
authors.lastname: Filly
mesh_terms: D000650:Amnion / Q000000981:diagnostic imaging*; D002140:California / Q000453:epidemiology; D015331:Cohort Studies; D020964:Embryo Loss / Q000000981:diagnostic imaging* / Q000401:mortality*; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013223:Statistics as Topic; D016216:Ultrasonography, Prenatal / Q000379:methods* / Q000706:statistics & numerical data*