[1] Johns Hopkins Univ, Dept Hlth Policy & Management, Bloomberg Sch Publ Hlth, Baltimore, MD 21218 USA
[2] Johns Hopkins Univ, Dept Epidemiol, Bloomberg Sch Publ Hlth, Ctr Clin Trials, Baltimore, MD USA
[3] Univ Penn, Scheie Eye Inst, Dept Ophthalmol, Philadelphia, PA 19104 USA
[4] Univ Penn, Ctr Clin Epidemiol & Biostat, Philadelphia, PA 19104 USA
[5] Univ Penn, Dept Biostat & Epidemiol, Philadelphia, PA 19104 USA
[6] Univ Penn, Dept Oncol, Philadelphia, PA 19104 USA
[7] Johns Hopkins Univ, Sch Med, Wilmer Eye Inst, Dept Ophthalmol, Baltimore, MD 21205 USA
[8] Univ Calif Los Angeles, David Geffen Sch Med, Jules Stein Eye Inst, Dept Ophthalmol, Los Angeles, CA 90095 USA
[9] New York Eye & Ear Inst, Dept Ophthalmol, New York, NY USA
[10] USC Sch Med, Doheny Eye Inst, Dept Ophthalmol, Los Angeles, CA USA
[11] NEI, NIH, Bethesda, MD 20892 USA
[12] Johns Hopkins Univ, Dept Oncol, Baltimore, MD USA
[13] Johns Hopkins Univ, Dept Biostat, Baltimore, MD 21205 USA
[14] Texas Retina Associates, Dallas, TX USA