Cataract

• University Hospital of Alexandroupolis — Alexandroupoli, Evros, Greece

• University Hospital of Alexandroupolis — Alexandroupoli, Evros, Greece

• University Hospital of Alexandroupolis — Alexandroupoli, Evros, Greece

• Section of Geriatric Medicine, St. Olavs University Hospital — Trondheim, Norway

• Boozman-Hof Regional Eye Clinic — Rogers, Arkansas, United States
• Empire Eye & Laser Center — Bakersfield, California, United States
• Katzen Eye Care & Laser Center — Boynton Beach, Florida, United States
• Cape Coral Eye Center — Cape Coral, Florida, United States

• Zhongshan Ophthalmic Center, Sun Yat-sen University — Guangzhou, Guangdong, China

• Ophthalmology Department, CHU Besançon — Besançon, France

• Sanshui District People's Hospital of Foshan;Guangzhou First Peoples' Hospital, Affiliated Hospital of Guangzhou Medical University — Foshan, Guangdong, China
• Guangzhou First Municipal People's Hospital — Guangzhou, Guangdong, China

Not specified

Not specified