[1] Univ Tennessee, Ctr Hlth Sci, Genet Genom & Informat, Memphis, TN 38163 USA
[2] Aalborg Univ Hosp, Clin Genet, Aalborg, Denmark
[3] Aalborg Univ, Clin Med, Aalborg, Denmark
[4] Inst Child Hlth, Genet, Athens, Greece
[5] Univ Ioannina, Med Sch, Ophthalmol, Ioannina, Greece
[6] Univ Tennessee, Ctr Hlth Sci, Ophthalmol, Memphis, TN 38163 USA