Important healthcare inventions

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Across
  1. 4. An accidental discovery that has saved millions of lives
  2. 6. Arguably the inventors of telehealth
  3. 7. Invented by Hippocrates in the Hippocratic Corpus
Down
  1. 1. Derived from the Latin word for cow
  2. 2. Far more effective than opioids, a blow to the head or cold water
  3. 3. Photography using magnets and radio
  4. 5. Definitely more effective than sponges soaked in lemons