1. Oklahoma Medical Research Foundation, Oklahoma City, and Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán México City México
2. Johns Hopkins University Baltimore Maryland
3. University of Oklahoma Oklahoma City
4. Hefner Eye Care and Optical Center Oklahoma City Oklahoma
5. David Geffen School of Medicine University of California Los Angeles
6. University of Oklahoma and Dean McGee Eye Institute Oklahoma City
7. School of Medicine Washington University in St. Louis St. Louis Missouri
8. Massachusetts Eye and Ear and Harvard University Boston
9. Harvard University Cambridge Massachusetts
10. Oklahoma Medical Research Foundation Oklahoma City
11. Cedars‐Sinai Medical Center Los Angeles California
12. School of Dentistry University of Minnesota Minneapolis
13. Carolinas Medical Center Charlotte North Carolina
14. Oklahoma Medical Research Foundation and University of Oklahoma Oklahoma City
15. Oklahoma Medical Research Foundation University of Oklahoma, and Department of Veterans Affairs Medical Center Oklahoma City