How I Got to Know What Caused Cancer for All These Years

It started probably forty years ago, with a lot of headaches that lasted for days. The only way to stop it was to go to the hospital and get an injection to put me sleep. For years I went to hospitals and had all the examinations and tests, but nothing showed up. Another month or so, Id get another attack, and same story all over again: nothing to diagnose. It went on for years. I could not have a...