#IHC2013: Effectiveness of brief intervention by GPs for medication overuse H/A @ahsheadache... http://t.co/z7csrX4cl2
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#IHC2013: Effectiveness of brief intervention by GPs for medication overuse H/A @ahsheadache http://t.co/t25i5vF8Dn...
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#IHC2013: Effectiveness of brief intervention by GPs for medication overuse H/A @ahsheadache http://t.co/mZFHq9oAIu...
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#IHC2013: Effectiveness of brief intervention by GPs for medication overuse H/A @ahsheadache http://t.co/mPoEMplyV1 http://t.co/iQsgAGMZMZ
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Background: Chronic headache (headache [GREATER-THAN OR EQUAL TO] 15 days/month for at least 3 months) affects 2--5% http://t.co/osIY1H45