In this photo taken Wednesday, May 18, 2016 medical doctor Rhett Kahn points out a lung disease caused by silicosis on an x-ray in his consulting room in Welkom, South Africa. Tens of thousands of South African miners with lung disease prepare to sue some of the country's largest gold mining companies.
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You would think that every single treatment you’re given at the hospital or doctor’s office is rooted in strong evidence, right? Not necessarily.
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