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Gamma knife treatment for refractory cluster headache: prospective open trial
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    Surgery for cluster headache: desperate measures for a desperate syndrome?

    Dear Editor,

    Donnet, Valade and Régis did not find gamma knife radiosurgery clinically useful in the intermediate or long-term management of patients with severe cluster headache (CH) refractory to other therapies; intriguingly, immediate / short-term results are dramatic and definitely encouraging but rather unpredictable. [1] The disconnect between these two set of results remains unexplained but may hold the vi...

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    Conflict of Interest:
    None declared.