1. Department of BioengineeringUniversity of California, San Diego, 9500 Gilman DriveLa JollaCalifornia
2. Department of Orthopedic SurgeryUniversity of CaliforniaLa JollaCalifornia
3. Department of Orthopedic SurgerySouthern California Kaiser PermanenteSan DiegoCalifornia
4. Department of RadiologyUniversity of California, 9500 Gilman Drive, Mail Code 0610La JollaCalifornia