[1
]
Mother Infant Research Institute, Tufts Medical Center, Boston, Massachusetts.
[2
]
Illumina, Redwood City, California.
[3
]
Center for Genetics and Maternal Fetal Medicine, Springfield, Oregon.
[4
]
Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University
of Minnesota, Minneapolis.
[5
]
Dana-Farber Cancer Institute, Boston, Massachusetts.
[6
]
Division of Maternal Fetal Medicine and Reproductive Genetics, Department of Obstetrics
and Gynecology, Brigham and Women's Hospital, Boston, Massachusetts.
[7
]
University of North Carolina, Chapel Hill.
[8
]
Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Eastern
Virginia Medical School, Norfolk.
[9
]
San Francisco Perinatal Associates, San Francisco, California.
[10
]
Sharp Rees-Stealy Medical Group, San Diego, California.