21.   Sheffield was kept overnight at Centinela Hospital Medical Center in Inglewood to undergo more testing, but he could be released as early as today.

22.   Sheffield was kept overnight so he could undergo tests to determine the cause of his symptoms.

23.   Sykora underwent a CAT scan that proved normal Saturday night, but he was kept overnight for observation.

24.   Sykora, who was kept overnight for observation, stayed on the ice motionless for several minutes before he was strapped on a stretcher.

25.   They put him in a box and kept him overnight while they continued to drive and their dog got into the box and totally mangled him.

26.   X-rays on Greenwell were negative, but he was kept overnight at Mt. Sinai Hospital for observation.

27.   Zelner was treated for frostbite on his hands and feet and for mild hypothermia at Tahoe Forest Hospital and kept overnight.

28.   After several tests, doctors decided to keep him overnight for observation, said hospital spokesman John Easton.

29.   An X-ray and scan at a hospital showed no damage, but he was being kept overnight for observation, International Skating Union officials said.

30.   Another flight attendant was kept overnight at a hospital with a head injury and was in stable condition, he said.