dr. christopher whitfield, assistant director of surgery at the university of chicago medicine.hank you for being with us. appreciate your coming on. i understand that you don't want to talk about her specific case, but we want to talk about this idea of these organists, lists that people get their names on to get new organs. of course it is always a game. lots of pressure on these families. him maintains these lists and how they get put together? >> the first thing to say is that the lists are devised according to scientific data. and the distinction between an adult and that party a checklist is mostly when the lists were developer when the system, i should say, for allegations course was developed, the data was there for the adult population, but the data for the pediatric population is much smaller. it had to be a separate list. gerri: is that still true today? >> that is still true today because the vast majority of transplants and long transportation are done for adult recipients, not for pediatric recipients. gerri: that is really the core of the problem, her age. and fro