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Hershman, Elliott B.1; Anderson, Robert2; Bergfeld, John A.3; Bradley, James P.4; Coughlin, Michael J.5; Johnson, Robert J.6; Spindler, Kurt P.7; Wojtys, Edward8; Powell, John W.9
An analysis of specific lower extremity injury rates on grass and FieldTrf playing surfaces in National Football League games:​ 2000-2009 seasons
Am J Sports Med. October 2012;​40(10):​2200-2205