TABLE 1

Participating CPX laboratories

1) Ball State University, Muncie, Indiana
2) Brigham and Women's Hospital, Boston, Massachusetts
3) Brooke Army Medical Center, Houston, Texas
4) Goshen Heart and Vascular Center, Goshen, Indiana
5) Massachusetts General Hospital, Boston, Massachusetts
6) Saint Francis University, Loretto, Pennsylvania
7) San Francisco State University, San Francisco, California
8) University of Kansas Medical Center, Kansas City, Kansas
9) Veteran's Hospital – Palo Alto, Palo Alto, California
10)  Yale University, New Haven, Connecticut