1 Department of Radiology and Medicine (Biomedical Informatics Research), Stanford University School of Medicine, Stanford, California.
2 Department of Radiology and Medicine (Biomedical Informatics Research), Stanford University School of Medicine, Stanford, California; School of Computer Science and Technology, Nanjing University of Science and Technology, Nanjing, China.
3 Byers Eye Institute at Stanford, Stanford University School of Medicine, Palo Alto, California.