1. Louis Stokes Cleveland Veterans Affairs Medical Center, Cleveland, OH
2. Case Western Reserve University, Cleveland, OH
3. Veterans Affairs Nebraska-Western Iowa Health Care System, Grand Island, NE
4. New Jersey Veterans Affairs Healthcare System, Trenton, NJ
5. University of Medicine and Dentistry of New Jersey, Newark, NJ
6. Clement J. Zablocki Milwaukee Veterans Affairs Medical Center and Medical College of Wisconsin, Milwaukee, WI
7. Palo Alto Veterans Affairs Medical Center, Palo Alto, CA
8. Stanford University, Stanford, CA