The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, United States
University of Maryland - Greenebaum Cancer Center, Baltimore, Maryland, United States
Johns Hopkins University, Baltimore, Maryland, United States
Quest Research Institiute, Bingham Farms, Michigan, United States
Clinical Trials. inc., Little Rock, Arkansas, United States
Ohio State University, Columbus, Ohio, United States
Columbia Comprehensive Epilepsy Center, Neurological Institute, New York, New York, United States
Fibromyalgia Treatment Centers of America, Chicago, Illinois, United States
Center for Arthiritis and Rheumatism, Vero Beach, Florida, United States
Graves - Gilbert Clinic, Bowling Green, Kentucky, United States
Drug Studies America, Marietta, Georgia, United States
Louisiana Sleep Foundation, Baton Rouge, Louisiana, United States
Medex Healthcare Research, Inc, St. louis, Missouri, United States
H. Lee Moffit Cancer Center & Research Institute at the University of S. Florida, Tampa, Florida, United States
Georgetown University Medical Center, Washington, District of Columbia, United States
North Shore University Hospital, Manhasset, New York, United States
Clinical Pharmacology Study Group, Worcester, Massachusetts, United States
AAIR Research Center, Rochester, New York, United States
Wake Research Associates, LLC, Raleigh, North Carolina, United States
California Cancer Center, Greenbrae, California, United States
Lombardi Comprehensive Cancer Research Institute, Georgetown University Medical Center, Washington, District of Columbia, United States
Broward Oncology Associates, Fort Lauderdale, Florida, United States
Brain and Sleep Diagnostic Centre, Toronto, Ontario, Canada