Retinopathy of Prematurity (ROP)

• Duke University Eye Center — Durham, North Carolina, United States
• University of Pennsylvania, Center for Preventive Ophthalmology and Biostatistics — Philadelphia, Pennsylvania, United States

• Vanderbilt University Medical Center — Nashville, Tennessee, United States

• Department of Ophthalmology, the Second Affiliated Hospital of Xi'an Medical University — Xi'an, Shaanxi, China
• Department of Ophthalmology, Xijing Hospital, Air Force Military Medical University — Xi'an, Shaanxi, China
• Department of Ophthalmology, Xianyang Rainbow Hospital — Xianyang, Shaanxi, China

• St. David's Medical Center — Austin, Texas, United States

• Izmır Provincial Health Directorate Bakircay University Cigli Regional Educational Hospital — Izmir, Menemen, Turkey (Türkiye)

• IWK Health — Halifax, Nova Scotia, Canada

Not specified

• Hospital Clínic de Barcelona - Maternitat — Barcelona, Spain

• Oslo University Hospital — Oslo, Norway

• Clinical Hospital Centre Rijeka, Department of Paediatrics — Rijeka, Primorje-Gorski Kotar County, Croatia