1. Wexner Medical Center at Ohio State University; Columbus; OH; USA
2. Columbia University Medical Center; New York; NY; USA
3. Thomas Jefferson University; Philadelphia; PA; USA
4. Tristate Maternal Fetal Medicine Association, Inc; Cincinnati; OH; USA
5. Mount Sinai Medical Center; New York; NY; USA
6. Wayne State University/Detroit Medical Center; Detroit; MI; USA
7. New York Hospital Queens and Weill Cornell Medical College; New York; NY; USA
8. Sequenom, Inc; San Diego; CA; USA
9. Sequenom Center for Molecular Medicine; San Diego; CA; USA