I'll give you two answers to that. There is a study, but it's actually been discredited.
Do you believe smoking causes cancer?
On June 20th, 2006. See this statement in context.
On June 20th, 2006. See this statement in context.
Senior Researcher, Canadian Union of Public Employees
I'll give you two answers to that. There is a study, but it's actually been discredited.
Do you believe smoking causes cancer?
See context to find out what was said next.