[1] Univ Tubingen, Inst Ophthalm Res, Tubingen, Germany
[2] Aristotle Univ Thessaloniki, Fac Hlth Sci, Sch Med, Thessaloniki, Greece
[3] Aristotle Univ Thessaloniki, Fac Hlth Sci, Sch Med, Postgrad Program MSc Ocular Surg, Thessaloniki, Greece
[4] Univ Ioannina, Ophthalmol Dept, Ioannina, Greece
[5] Athens Med Ctr, Pediat Ophthalmol Dept, Athens, Greece