- Migraines, clump headaches linked to however you sleep: study New York Post
- Ticking Time Bombs: How Our Biological Clock Influences Cluster Headaches and Migraines SciTechDaily
- Migraines May Follow Daily Circadian Cycles, Study Shows U.S. News & World Report
- Migraine and clump headaches linked to the body's interior clock, survey suggests Sky News
- Why Your Migraine oregon Cluster Headaches Happen astatine the Same Time of Day Healthline