Respiration Disorders

• Study Site 130 — Los Angeles, California, United States
• Study Site 128 — Mission Viejo, California, United States
• Study Site 123 — San Diego, California, United States
• Study Site 127 — San Jose, California, United States

• John D. Dingell VA Medical Center, Detroit, MI — Detroit, Michigan, United States

• Nationwide Enrollment via Internet, please email: [email protected] — Minneapolis, Minnesota, United States
• University of Minnesota — Minneapolis, Minnesota, United States
• University of Alberta — Edmonton, Alberta, Canada
• University of Manitoba — Winnipeg, Manitoba, Canada

• National Center of Cardiology and Internal Medicine — Bishkek, Kyrgyzstan

Not specified

• Hospital Universitario La Paz — Madrid, Spain

• Hospital Universitari Son Espases — Palma de Mallorca, Balearic Islands, Spain
• Hospital Universitario Infanta Sofía — San Sebastián de los Reyes, Madrid, Spain
• Hospital Universitario General de Guadalajara — Guadalajara, Spain
• Hosptial Universitario La Paz, IdiPAZ — Madrid, Spain

• Alta Bates Summit Medical Center — Berkeley, California, United States
• Children's Hospital Oakland — Oakland, California, United States
• University of California, San Francisco — San Francisco, California, United States
• Northwestern Memorial Hospital — Chicago, Illinois, United States

• Imelda Hospital — Bonheiden, Belgium

• Herz- und Diabeteszentrum NRW — Bad Oeynhausen, North Rhine-Westphalia, Germany