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that the surgeon August Bier tested on his own assistant a form of anesthesia consisting of injecting cocaine directly into the spine, and to check how effective it was, he stuck a needle in his leg, hit him in the shins with a hammer, ripped off his pubic hair and even squeezed his testicles.
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Fun Fact: that the surgeon August Bier tested on his own assistant a form of anesthesia consisting of injecting cocaine directly into the spine, and to check how effective it was, he stuck a needle in his leg, hit him in the shins with a hammer, ripped off his pubic hair and even squeezed his testicles.
Source
en.wikipedia.org
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