Multicenter Study

Admission or observation is not necessary after a negative abdominal computed tomographic scan in patients with suspected blunt abdominal trauma: results of a prospective, multi-institutional trial.

J Trauma. 1998 Feb 1;44(2):273-80; discussion 280-2.
Comparative Study

Absent peritoneal fluid on screening trauma ultrasonography in children: a prospective comparison with computed tomography.

J. Pediatr. Surg. 2001 Apr 1;36(4):565-9.
Review

Isolated free fluid on computed tomographic scan in blunt abdominal trauma: a systematic review of incidence and management.

J Trauma. 2002 Jul 1;53(1):79-85.