Children with special health care needs enrolled in the State Children's Health Insurance Program (SCHIP): patient characteristics and health care needs. - Szilagyi PG; Shenkman E; Brach C; LaClair BJ; Swigonski N; Dick A; Shone LP; Schaffer VA; Col JF; Eckert G; Klein JD; Lewit EM (Pediatrics, 2003)