What treatment might an old time doctor have tried to accomplish with leeches?\nOptions:\n- heart transplant\n- distance himself\n- perform surgery\n- study medicine\n- let blood
Let's think now! Step-by-step reasoning:
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Let blood is the withdrawal of blood from a patient to prevent or cure illness and disease. Let blood is the treatment an old-time doctor might have tried to accomplish with leeches.
So, the final answer is let blood.
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