1. Department of Physical Medicine and Rehabilitation, Cedars-Sinai, Los Angeles, CA, USA
2. Casa Colina Hospital and Centers for Healthcare, Pomona, CA, USA
3. John Muir Medical Center, Walnut Creek, CA, USA
4. Sharp Memorial Medical Center, San Diego, CA, USA
5. Health Department, State University of New York at Cortland, Cortland, NY, USA