reference
Weitzman et al. defined Delayed Sleep Phase Syndrome as a chronobiological disorder associated with sleep-onset insomnia in a 1981 study published in Archives of General Psychiatry.
Authors
Sources
- Neuroscience of sleep - Wikipedia en.wikipedia.org via serper
- Extent and Health Consequences of Chronic Sleep Loss and ... - NCBI www.ncbi.nlm.nih.gov via serper