National headache Foundation educates headache sufferers and healthcare professionals about headache causes and treatments.

国家头痛基金会教育头痛患者和保健专业人员关于头痛的成因和治疗。

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Or,it can be severe. The National Headache Foundation says more than forty-five million people in the United States suffer chronic headaches.

VOA: special.2011.05.03

Or,it can be severe. The National Headache Foundation says more than forty five million people in the United States suffer chronic headaches.

VOA: special.2010.03.30