In the 1960s and '70s, there wasn't much evidence at all. We...
In the 1960s and '70s, there wasn't much evidence at all. We knew vaguely the causes of cancer, but methods like genomics were very new.
In the 1960s and '70s, there wasn't much evidence at all. We knew vaguely the causes of cancer, but methods like genomics were very new.