1. Division of Paediatric Ophthalmology, Strabismus, and Adult Motility, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA;
2. Department of Translational Medicine, University of Ferrara, Ferrara, Italy;
3. Istituto Internazionale per la Ricerca e Formazione in Oftalmologia (IRFO), Forlì, Italy;
4. Department of Cornea and Refractive surgery, University of Ottawa Eye Institute—The Ottawa Hospital, Ottawa, ON, Canada;
5. Department of Ophthalmology, Sydney Children's Hospital, Sydney, Australia;
6. Section of Pediatric Ophthalmology, Department of Ophthalmology, Emory University School of Medicine, Atlanta, GA;
7. Division of Ophthalmology, CHOC Children's Hospital, Orange, CA;
8. Department of Ophthalmology, University of Pittsburgh School of Medicine, Pittsburgh, PA; and
9. University of Pittsburgh School of Medicine, Pittsburgh, PA.