anderson cancer center and stephanie strom of the new york times. welcome to you both. let me start with you, dr. depinho, how significant do you think a move this is? >> i think this is quite significant. in isolation, it may not have a specific impact, but it send a very strong message to all retailers that tobacco is a dangerous product. it extracts a very significant social, economic, toll on our society that is responsible for about 20% of deaths in the united states, and about 30% of cancer deaths. so it's a very important problem. and i greatly applaud cvs' bold move in this direction. they've placed people before profits. >> woodruff: stephanie strom, how long has cvs been thinking about doing this, and why do they say they're doing it? >> well, it's really unclear, judy, how long this has been going on internally, in discussions. my own guess is that larry merlo, the c.e.o., who is himself a pharmacist, started with the company 20 years ago as a pharmacist, he may have been sort of thinking in this direction before he even got into the c.e.o.'s chair. and i sus