PT - JOURNAL ARTICLE ED - Williams, Marc AU - Schils, Jean AU - Kline, Mitchell TI - Acute onset of knee pain DP - 2001 Sep 01 TA - Cleveland Clinic Journal of Medicine PG - 744--746 VI - 68 IP - 9 4099 - http://www.ccjm.org/content/68/9/744.short 4100 - http://www.ccjm.org/content/68/9/744.full SO - Cleve Clin J Med2001 Sep 01; 68