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Seasonal affective disorder - Wikipedia, the free
Seasonal affective disorder (SAD), also known as winter depression, is an affective, or mood, disorder. Most SAD sufferers experience normal mental health ...
http://en.wikipedia.org/wiki/Seasonal_affective_disorder |
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What is Seasonal Depression?
Seasonal depression, often called seasonal affective disorder (SAD), is a depression that occurs each year at the same time, usually starting in fall or ...
http://www.clevelandclinic.org/health/health-info/docs/2300/2361.asp?index=9293 |