It's difficult for someone who is self-reporting to do - if all you have is an a...

		scott_s on Dec 9, 2011 \| parent \| context \| favorite \| on: Over 40% of cancers due to lifestyle, says review It's difficult for someone who is self-reporting to do - if all you have is an anecdote. It's not difficult with good experimental design, which is part of my point.