[1] Childrens Hosp Philadelphia, Div Ophthalmol, 3401 Civ Ctr Blvd,Ophthalmol 9 MAIN, Philadelphia, PA 19104 USA
[2] Univ Penn, Scheie Eye Inst, Perelman Sch Med, Philadelphia, PA 19104 USA
[3] Univ Calif San Francisco, Dept Ophthalmol, San Francisco, CA USA
[4] Univ Iowa, Div Neonatol, Iowa City, IA USA
[5] Johns Hopkins Univ, Div Neonatol, Baltimore, MD USA
[6] Vanderbilt Univ, Dept Ophthalmol, 221 Kirkland Hall, Nashville, TN 37235 USA
[7] Johns Hopkins Univ, Dept Ophthalmol, Baltimore, MD USA
[8] Nationwide Childrens Hosp, Dept Ophthalmol, Columbus, OH USA
[9] Childrens Hosp Philadelphia, Off Study Chair, Philadelphia, PA 19104 USA
[10] Univ Penn, Perelman Sch Med, Data Coordinating Ctr, Philadelphia, PA 19104 USA
[11] Emory Univ, Sch Med, Childrens Healthcare Atlanta, Clin Ctr, Atlanta, GA 30322 USA
[12] Univ Colorado, Univ Colorado Hosp, Childrens Hosp Colorado, Denver, CO 80202 USA
[13] Albany Med Coll, Albany, NY USA
[14] Lehigh Valley Hosp, Allentown, PA USA
[15] Johns Hopkins Univ, Johns Hopkins Hosp, Baltimore, MD 21218 USA
[16] SUNY Buffalo, Women & Childrens Hosp Buffalo, Buffalo, NY USA
[17] Med Univ South Carolina, Columbia, SC USA
[18] Univ Illinois, Chicago, IL USA
[19] Cincinnati Childrens Hosp Med Ctr, Good Samaritan Hosp, Cincinnati, OH 45229 USA
[20] Univ Cincinnati, Med Ctr, Cincinnati, OH 45267 USA
[21] Nationwide Childrens Hosp, Riverside Methodist Hosp, Grant Med Ctr, Doctors Hosp, Columbus, OH USA
[22] Kapiolani Med Ctr Women & Children, Honolulu, HI USA
[23] Univ Texas Houston, Childrens Mem Hermann Hosp, Houston, TX USA
[24] Indiana Univ, Riley Hosp Children, Indiana Univ Hlth, Bloomington, IN 47405 USA
[25] Univ Iowa, Stead Family Childrens Hosp, Iowa City, IA 52242 USA
[26] Queens Univ, Kingston Hlth Sci Ctr, Kingston, ON, Canada
[27] Loma Linda Univ, Childrens Hosp, Loma Linda, CA 92350 USA
[28] Univ Louisville, Norton Childrens Hosp, Louisville, KY 40292 USA
[29] Univ Minnesota, Masonic Childrens Hosp, Minneapolis, MN 55455 USA
[30] Vanderbilt Eye Inst, Nashville, TN USA
[31] Vanderbilt Univ, Med Ctr, Monroe Carell Jr Childrens Hosp Vanderbilt, Nashville, TN USA
[32] Univ Oklahoma, Hlth Sci Ctr, Childrens Hosp, OU Med Ctr, Norman, OK 73019 USA
[33] Univ Nebraska, Nebraska Med, Lincoln, NE 68583 USA
[34] Hosp Univ Penn, Childrens Hosp Philadelphia, Penn Hosp, 3400 Spruce St, Philadelphia, PA 19104 USA
[35] Univ Pittsburgh, Childrens Hosp Pittsburgh, Magee Women Hosp, UPMC, Pittsburgh, PA 15213 USA
[36] Rhode Isl Hosp, Women & Infants Hosp Rhode Isl, Providence, RI 02903 USA
[37] St Louis Univ, Cardinal Glennon Childrens Hosp, St Louis, MO 63103 USA
[38] Univ Utah, Primary Childrens Hosp, Salt Lake City, UT 84112 USA
[39] Univ Utah Hosp, Salt Lake City, UT USA
[40] Univ Calif San Francisco, Benioff Childrens Hosp, San Francisco, CA 94143 USA
[41] Zuckerberg San Francisco Gen Hosp, San Francisco, CA USA
[42] Univ Washington, Seattle Childrens Hosp, Med Ctr, Seattle, WA 98195 USA
[43] Hosp Sick Children Sick Kids, Toronto, ON, Canada
[44] Harbor UCLA Med Ctr, Los Angeles Biomed Res Inst, Los Angeles, CA USA
[45] Delaware Cty Mem Hosp, Crozer Chester Med Ctr, Drexel Hill, PA USA
[46] Nemours Alfred I duPont Hosp Children, Wilmington, DE USA
[47] Beth Israel Deaconess Med Ctr, Cost Effectiveness Component, Boston, MA 02215 USA