1 Department of Global and Community Health, College of Public Health, George Mason University, Fairfax, Virginia. Electronic address: cdrewsbo@gmu.edu.
2 Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, Georgia.
3 Department of Global and Community Health, College of Public Health, George Mason University, Fairfax, Virginia.
4 Akron Children's Hospital, Akron, Ohio.
5 Department of Ophthalmology, Stanford University School of Medicine, Palo Alto, California.