[1] Radboud Univ Nijmegen, Med Ctr, Dept Ophthalmol, Nijmegen, Netherlands
[2] Univ Bonn, Dept Ophthalmol, Bonn, Germany
[3] Univ Bonn, GRADE Reading Ctr, Bonn, Germany
[4] Inst Med Biometry, Informat & Epidemiol, Bonn, Germany
[5] Radboud Univ Nijmegen, Med Ctr, Dept Hlth Evidence, Nijmegen, Netherlands
[6] Univ Regensburg, Inst Human Genet, Regensburg, Germany