The classification of chronic daily headache in adolescents--a comparison between the second edition of the international classification of headache disorders and alternative diagnostic criteria.

Bigal ME, Rapoport AM, Tepper SJ, Sheftell FD, Lipton RB. The classification of chronic daily headache in adolescents--a comparison between the second edition of the international classification of headache disorders and alternative diagnostic criteria. Headache. 2005 May; 45(5):582-9.

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