1 Department of Ophthalmology, Casey Eye Institute, Oregon Health & Science University, Portland, Oregon.
2 Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear, Infirmary, University of Illinois at Chicago, Chicago, Illinois.
3 Department of Ophthalmology, Casey Eye Institute, Oregon Health & Science University, Portland, Oregon; Department of Medical Informatics and Clinical Epidemiology, Oregon Health & Science University, Portland, Oregon. Electronic address: chiangm@ohsu.edu.