[1] Univ Washington, Dept Biol Struct, Inst Stem Cells & Regenerat Med, Seattle, WA 98195 USA
[2] Univ Virginia, Sch Med, Dept Neurosci, Charlottesville, VA 22908 USA
[3] Univ Florida, Coll Med, Dept Ophthalmol, Gainesville, FL 32610 USA
[4] Stanford Univ, Dept Otolaryngol, Sch Med, Stanford, CA 94305 USA
[5] Johns Hopkins Univ, Sch Med, Dept Mol Biol & Genet, Baltimore, MD 21205 USA
[6] Johns Hopkins Univ, Sch Med, Dept Neurosci, Baltimore, MD 21205 USA
[7] Johns Hopkins Univ, Sch Med, Dept Otolaryngol, Baltimore, MD 21205 USA