Peking University Third Hospital, Beijing, China
General Hospital of Guangzhou Military Command of PLA, Guangzhou, China
Union Hospital Tongji Medical College Huazhong University of Science and Technology, Guangzhou, China
Ian Eye Center, Seoul, Korea, Republic of
Soonchunhyang University Cheonan Hospital, Chungcheongnam-do, Korea, Republic of
St. Mary's Eye center, Geyonggi-do, Korea, Republic of
Andover Eye Associates, Inc, Andover, Massachusetts, United States
Total Eye Care, PA, Memphis, Tennessee, United States
Havana Research Institute LLC, Burbank, California, United States
The University of New South Wales School of Optometry and Vision Science, Sydney, Australia
Lugene Eye Institute, Glendale, California, United States
Toronto Headache & Pain Centre, North York, Ontario, Canada
Hany Demian, Oakville, Ontario, Canada
The Shapero Markham Headache and Pain Treatment Centre, Markham, Ontario, Canada
Baumann Cosmetic & Research Institute, Miami, Florida, United States
Tennessee Clinical Research Center, Nashville, Tennessee, United States
Shideler Clinical Research Center, Carmel, Indiana, United States
Paducah Retinal Center, Paducah, Kentucky, United States
Maculacare - New York, New York, New York, United States
Retina Vitreous Surgeons of Central NY, PC, Syracuse, New York, United States
Instituto Oftalmologica Profesor Arentsen, Santiago, Región Metropolitana, Chile
Asian Eye Institute, Makati City, Metro Manila, Philippines
St. Luke's Medical Center, Quezon City, Metro Manila, Philippines