PT - JOURNAL ARTICLE AU - Hart, Dennis L TI - Too Many Variables, Not Enough Equations DP - 2000 Jun 01 TA - Physical Therapy PG - 621--622 VI - 80 IP - 6 4099 - http://jcore-reference.highwire.org/content/80/6/621.2.short 4100 - http://jcore-reference.highwire.org/content/80/6/621.2.full SO - Phys Ther2000 Jun 01; 80