The Siesta Group, Vienna, Austria
Medical University of Vienna, University Clinic of Psychiatrie, Vienna, Austria
Skogby Sleep Clinic, Espoo, Finland
The Woolcock Institute of Medical Research, Glebe, Australia
Australian Clinical Research Organisation, Kippa Ring, Australia
Melbourne Sleep Disorder Centre, Melbourne, Australia
Sleep Medicine Associates P.A., Dallas, Texas, United States
PAB Clinical Research, Brandon, Florida, United States
OmniTrials, Naples, Florida, United States