Hippocrates and Galen

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Across
  1. 2. The Four _________
  2. 4. Cutting open dead bodies to study them
  3. 5. Galen practiced most of his medicine in which empire?
  4. 6. Watching, studying and making lots of notes
  5. 7. What historical era were both these doctors from?
Down
  1. 1. Belief that religion or similar ideas caused illness and disease
  2. 3. Doctors today still abide by the Hippocratic ______