Patrick DL, Stein J, Porta M, Porter CQ, Ricketts TC. Poverty, health services, and health status in rural America. Milbank Q. 1988;66(1):105-36.
Patrick DL, Stein J, Porta M, Porter CQ, Ricketts TC. Poverty, health services, and health status in rural America. Milbank Q. 1988;66(1):105-36.