Check out the interview with Dr. Muhammad Yunus at Knowledge@Wharton.
"… it has worked all over the country, all over the world. In many countries, they said, “Well, our country is not like Bangladesh. We don’t have such a huge density of population and not as much poverty concentrated in our population. So in our country it won’t work.” We said, “Well, you debate about your country and Bangladesh. Give the task to us. We will go and do it for you.” Many countries accepted that, so we started doing it. We did it in Turkey. We did it in Kosovo. We did it in Costa Rica, Guatemala, China, India and many other places to demonstrate those kinds of things."