Dent Neurologic Institute, Amherst, New York, United States
Stanford Sleep Medicine Center, Redwood City, California, United States
Pacific Research Network, San Diego, California, United States
Stanford Sleep Medicine Center, Redwood City, California, United States
Vanderbilt University School of Medicine, Nashville, Tennessee, United States
SleepMed of South Carolina; SleepMed, Inc., Columbia, South Carolina, United States
NW FL Clinical Research Group, Gulf Breeze, Florida, United States
Stanford Sleep Medicine Center, Redwood City, California, United States
Orlando Pediatric Pulmonary and Sleep, Winter Park, Florida, United States
GSK Investigational Site, Charlottesville, Virginia, United States
GSK Investigational Site, Austin, Texas, United States
GSK Investigational Site, Austin, Texas, United States
GSK Investigational Site, Austin, Texas, United States
XenoPort Clinical Site, Tacoma, Washington, United States
GSK Investigational Site, Albuquerque, New Mexico, United States
GSK Investigational Site, Dallas, Texas, United States