dr. pedro estevez was born in chicago. he did some of his training at nyu and now practices here in cuba. >> i would like to say my commitment is here. i have a job to do. i think the u.s. has plenty of doctors. >> there is a fear here that cuba is losing its doctors. and cuba's doctors aren't just practicing in cuba. they're practicing all over the world. in fact, experts estimate anywhere between one-fifth and one-third of cuba's doctors actually practice overseas. fidel castro sent doctors from angola to haiti. we find another purpose as well. cuba has sent 14,000 doctors to venezuela over the last ten years. in exchange, venezuela has sent millions of barrels of oil. for all that we americans spend on our medical bills, you would think that americans would be much healthier. but we're not. >> one of the things that comes up is the cost per capita here in cuba is much less than the united states. yet, life expectancy is about the same. childhood mortality rates are lower here. how? >> i think it is the way the system is