EE HAD ARRIVED AT THE PARKING LOT, AND EXITED HIS VEHICLE. THERE WERE PATCHES OF ICE THROUGHOUTTHE PARKING LOT. EE WAS LOOKING FOR NON-ICE PLACES TO WALK, BUT LOST HIS FOOTING AND SLIPPED. IN TRYING NOT TO FALL, HE JERKED HIS BODY AROUND, TWISTING HIS LOWER BACK AND LEG. HE RECEIVED CHIROPRACTIC TREATMENT ON 12-15-03.