[1] Univ Toronto, Mt Sinai Hosp, Fetal Med Unit, Toronto, ON, Canada
[2] Univ Texas Hlth Sci Ctr Houston, Childrens Mem Hermann Hosp, Fetal Ctr, Houston, TX 77030 USA
[3] Baylor Coll Med, Dept Obstet & Gynecol, Texas Childrens Fetal Center, Houston, TX 77030 USA
[4] Baylor Coll Med, Dept Obstet & Gynecol, Houston, TX 77030 USA
[5] Mt Sinai Hosp, Maternal Infant Care MiCare Ctr, Toronto, ON, Canada
[6] Univ Toronto, Mt Sinai Hosp, Dept Paediat, Toronto, ON, Canada
[7] Hop Antoine Beclere, Ctr Maladie Rare Hernie Coupole Diaphragmat, Clamart, France
[8] Univ Paris Sud, Hop Antoine Beclere, AP HP, Serv Gynecol Obstetr, Clamart, France
[9] Mayo Clin, Coll Med, Dept Obstet & Gynecol, Div Maternal Fetal Med, Rochester, MN USA
[10] Brown Univ, Providence, RI 02912 USA
[11] Childrens Hosp Philadelphia, Philadelphia, PA 19104 USA
[12] Childrens Minnesota, Minneapolis, MN USA
[13] Cincinnati Childrens Hosp, Cincinnati, OH USA
[14] Colorado Childrens Hosp, Aurora, CO USA
[15] Columbia Univ, Med Ctr, New York, NY USA
[16] Harvard Univ, Boston, MA 02115 USA
[17] Johns Hopkins Univ, Baltimore, MD USA
[18] McGill Univ, Hlth Ctr, Montreal, PQ, Canada
[19] Ohio State Univ, Columbus, OH 43210 USA
[20] Stanford Univ, Stanford, CA 94305 USA
[21] Univ British Columbia, Vancouver, BC, Canada
[22] Univ Calif San Francisco, San Francisco, CA 94143 USA
[23] Univ Maryland Med Syst, Baltimore, MD USA
[24] Univ Michigan, Sch Med, Ann Arbor, MI USA
[25] Univ N Carolina, Chapel Hill, NC 27515 USA
[26] Univ Pittsburgh, Sch Med, Pittsburgh, PA USA
[27] Univ Rochester, Med Ctr, Rochester, NY 14642 USA
[28] Univ Texas Hlth Sci Ctr Houston, Houston, TX 77030 USA
[29] Texas Childrens Hosp, Houston, TX 77030 USA
[30] Univ Texas Southwestern Med Ctr Dallas, Dallas, TX 75390 USA
[31] Univ Toronto, Toronto, ON, Canada
[32] Vanderbilt Univ, Med Ctr, Nashville, TN USA
[33] Washington Univ St Louis, St Louis, MO USA
[34] Yale Univ, New Haven, CT USA