Affiliation: | 1. Department of Pathology, New York U.S.A.;2. Department of Obstetrics, New York U.S.A.;3. Prenatal Diagnosis Laboratory of New York City, a service division of Medical and Health Research Association of New York City, New York U.S.A.;4. Department of Pediatrics, New York U.S.A.;5. Prenatal Diagnosis Laboratory of New York City, a service division of Medical and Health Research Association of New York City, New York U.S.A. Department of Pediatrics, New York U.S.A. |