Professor Troost said these patients should be considered for preventive therapy.

BBC: Poison 'prevents headaches'

Todd Troost, professor of neurology at Wake Forest, who led the study said Botox could be less expensive and have fewer side effects than many medications used for headache prevention.

BBC: Poison 'prevents headaches'

Daan van Bunge (33) and van Troost hit two sixes each in a show of defiance and Borren chipped in with 34 late on before Farveez Maharoof bowled last man Pieter Seelaar with the final delivery of the 49th over to end the game.

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