doctors and discoveries

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Across
  1. 1. greek whose name is also an oath taken by docs
  2. 5. The medical pope of the Middle Ages
  3. 6. cholera epidemic of 1854 scientist
Down
  1. 2. famous Louis who discovered germs cause disease
  2. 3. inventor of the Polio Vaccine
  3. 4. where the famous 1854 cholera epidemic took place
  4. 5. theory discovered by Koch