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Blackouts: Causes, Side Effects, and Prevention - Healthline
Fainting: What It Feels Like and What Causes It - WebMD
Blackouts - Symptoms, Causes, Treatments - Healthgrades
Blacking Out, Fainting, or Loss of Consciousness
What causes blackouts? - Medical News Today
Brownout vs. Blackout From Drinking - Cleveland Clinic Health …
Fainting: Causes & First Aid Tips - Cleveland Clinic
Fainting: Causes, Symptoms and When to see a Doctor - Patient
Fainting: Causes, Types, and Prevention - Healthline
Fainting (Syncope): Causes, Symptoms, Treatment, Prevention - MedicineNet