About 15 per cent of lung cancers occur in lifetime never smokers, and besides exposures to second-hand smoke, other risk factors for these cancers are yet to be determined.

Matthew Schabath

Besides Cent Hand Lifetime Lung Occur Per Second Smoke Smokers

Related Quotes

If I was to say where we were, I'd say we were at about 80-85 per cent where we can be.

close to 100 per cent.

The doctors were astounded to know she wasn't a smoker and said second-hand smoke was the cause of her illness.

— Courtney Otto

AstoundedCauseDoctors

They know how important this game is and how important it is that everyone is 100 per cent fit going in, so they'll make the right call.

— Ricky Ponting

And the proportion will increase to 10 per cent by 2020.

— Zhang Guobao

CentIncreasePer