Grading of nonrhabdomyosarcoma soft tissue sarcoma in children and adolescents: a comparison of parameters used for the Fédération Nationale des Centers de Lutte Contre le Cancer and Pediatric Oncology Group Systems. - Khoury JD; Coffin CM; Spunt SL; Anderson JR; Meyer WH; Parham DM; Khoury, Joseph D; Coffin, Cheryl M; Spunt, Sheri L; Anderson, James R; Meyer, William H; Parham, David M (Cancer (0008543X), 2010)