You’ve probably heard of “The Three Tenors” and the “Three Musketeers,” but what about the “Three Doctors?” As part of our ongoing initiative “Chasing the Dream: Poverty and Opportunity in America,” MetroFocus contributor Mike Schneider talks to Dr. Sampson Davis about how a pact between him and his friends when they were teenagers helped him survive the mean streets of Newark and achieve his dream of being a doctor.