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The Journal of Headache and Pain > 2013 > 14 > 1 > 1-7
Journal of Clinical Epidemiology > 1995 > 48 > 2 > 269-280
Biomedicine & Pharmacotherapy > 1995 > 49 > 10 > 452-455
The Journal of Headache and Pain > 2013 > 14 > 1 > 1-7
Journal of Clinical Epidemiology > 1995 > 48 > 2 > 269-280
Biomedicine & Pharmacotherapy > 1995 > 49 > 10 > 452-455