Sarah Key 

@sarahkey
Sarah Key is one of the world's most experienced clinicians in the treatment of low back pain who speaks in easy-to-access layman's language that any old Jo Blow can understand.
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Beyond Back Pain with Sarah Key
By Sarah Key
Don't be a dodo [Slang. Dull-witted, slow-reacting person] when it comes to understanding your back. Sign up for rational explanations - and solutions, yes solutions - so you can start fixing it yourself.