[1] Johns Hopkins Med Inst, Baltimore, MD 21205 USA
[2] Beth Israel Deaconess Med Ctr, Harvard Univ, Med Sch Obstet & Gynecol, Boston, MA 02215 USA
[3] Ctr Preimplantat Genet LabCorp, Rockville, MD USA
[4] La Jolla IVF, Infertility, La Jolla, CA USA
[5] Arizona Ctr Fertil Studies, Infertility, Phoenix, AZ USA
[6] Brigham & Womens Hosp, Harvard Univ, Med Sch Obstet & Gynecol, Boston, MA 02115 USA
[7] Shady Grove Fertil Reprod Sci Ctr, Infertility, Rockville, MD USA