[1] Harvard Med Sch, Boston Childrens Hosp, Dept Neurol, Boston, MA 02115 USA
[2] Harvard Med Sch, Brigham & Womens Hosp, Dept Obstet Gynecol & Reprod Biol, Boston, MA USA
[3] Harvard Med Sch, Boston Childrens Hosp, Dept Ophthalmol, Boston, MA 02115 USA
[4] Univ N Carolina, Dept Pediat, Chapel Hill, NC 27515 USA
[5] Boston Univ, Boston Med Ctr, Dept Pediat, Div Neurol, Boston, MA 02215 USA
[6] Tufts Univ, Sch Med, Dept Publ Hlth & Community Med, Boston, MA 02111 USA
[7] Hannover Med Sch, Perinatal Neuropidemiol Unit, Hannover, Germany
[8] Baystate Med Ctr, Springfield, MA USA
[9] Beth Israel Deaconess Med Ctr, Boston, MA 02215 USA
[10] Brigham & Womens Hosp, 75 Francis St, Boston, MA 02115 USA
[11] Childrens Hosp, 300 Longwood Ave, Boston, MA 02115 USA
[12] Massachusetts Gen Hosp, Boston, MA 02114 USA
[13] Tufts Univ New England Med Ctr, 750 Washington St, Boston, MA 02111 USA
[14] U Mass Mem Hlth Ctr, Worcester, MA USA
[15] Yale New Haven Med Ctr, 20 York St, New Haven, CT 06504 USA
[16] Forsyth Hosp, Baptist Med Ctr, Winston Salem, NC USA
[17] Univ Hlth Syst Eastern Carolina, Greenville, NC USA
[18] North Carolina Childrens Hosp, Chapel Hill, NC USA
[19] DeVos Childrens Hosp, Grand Rapids, MI USA
[20] Sparrow Hosp, Lansing, MI USA
[21] Univ Chicago Hosp, Chicago, IL 60637 USA
[22] William Beaumont Hosp, Royal Oak, MI 48072 USA