>> sharon bullock, thank you very much for joining me. please send our best to the family and obviously sarah in particular. >> thank you. >> we're all rooting for her. thank you for joining me. i now want to bring in the head of biotechs of new york university and langone medical center. this is a real dilemma, isn't it, for the medical profession which is why secretary sebelius took the position she did, didn't want to set a precedent. explain to me why the law says there can be no under the age of 12 in receipt of an adult lung. >> so the argument has been the outcomes are worse for kids under 12 who get adult lungs. sometimes the lungs don't fit from an adult, they're too big. so you can only use a piece. and when that's done, it raises the risk of infection. kids are harder with lungs, because they also seem to be a more difficult management problem for immuno suppression. we just heard, the data is not great on this. but i think people looked at it