1. Department of Neurology and Neurosurgery, National Institute of Health, Yerevan, Armenia
2. Sleep and Movement Disorders Center, Somnus Neurology Clinic, Yerevan, Armenia
3. Division of Pulmonary, Critical Care, and Sleep Medicine, Rush University Medical Center, Chicago, Illinois
4. Gynecological Service, V. Avagyan Medical Center, Yerevan, Armenia
5. Circadian Rhythms and Sleep Research Lab, Northwestern University, Feinberg School of Medicine, Chicago, Illinois