Guidelines for controlled trials of drugs in tension-type headache: second edition.

Abstract

The Clinical Trials Subcommittee of the International Headache Society published its first edition of the guidelines on controlled trials of drugs in tension-type headache in 1995. These aimed 'to improve the quality of controlled clinical trials in tension-type headache', because 'good quality controlled trials are the only way to convincingly demonstrate… (More)
DOI: 10.1111/j.1468-2982.2009.01948.x

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