mrs cavanagh, from foyle park in londonderry, had a complex medical history of chronic heart and renal failure. .
a sign at a planned parenthood clinic is pictured in oklahoma city, in 2015. .
sport galleries
letter exposes 22 lab animal deaths at uc berkeley from 2015 to 2017
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it's not clear how well they'll stack up against current migraine therapies, because head-to-head studies haven't been done. .