1. Vissum Instituto Oftalmológico de Alicante, Universidad Miguel Hernández, Alicante, Spain
2. Faculty of Medicine, The University of Jordan, Amman, Jordan
3. Premium Clinic, Teplice, Czech Republic
4. Eye Clinic, Jessenius Faculty of Medicine, Martin, Slovakia
5. Division of ophthalmology, Universidad Miguel Hernández, Alicante, Spain