First-trimester screening with nasal bone in twins
Cleary-Goldman, Jane, MD ; Rebarber, Andrei, MD ; Krantz, David, MA ; Hallahan, Terrence, PhD ; Saltzman, Daniel, MD
American journal of obstetrics and gynecology, 2008-09, Vol.199 (3), p.283.e1-283.e3 [Periódico revisado por pares]Philadelphia, PA: Mosby, Inc
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