Corrigendum to “Protective Effect of the HIF-1A Pro582Ser Polymorphism on Severe Diabetic Retinopathy” - Neda Rajamand Ekberg; Sofie Eliasson; Young Wen Li; Xiaowei Zheng; Katerina Chatzidionysiou; Henrik Falhammar; Harvest F. Gu; Sergiu-Bogdan Catrina (Journal of Diabetes Research)