1. Effects of morphine analgesia on diagnostic accuracy in emergency department patients with abdominal pain: a prospective, randomized trial 
Stephen H Thomas, MD, MPH, William Silen, MD, FACS, Farah Cheema, MD, Andrew Reisner, MD, Sohail Aman, MD, Joshua N Goldstein, MD, PhD, Alan M Kumar, MD, Thomas O Stair, MD 
Journal of the American College of Surgeons 
Volume 196, Issue 1, Pages (January 2003)
DOI: /S (02)

2. Figure 1
Study schema.
Journal of the American College of Surgeons  , 18-31DOI: ( /S (02) )

3. Figure 2
Examining physician evaluation. LLQ, left lower quadrant; LUQ, left upper quadrant; RLQ, right lower quadrant; RUQ, right upper quadrant.
Journal of the American College of Surgeons  , 18-31DOI: ( /S (02) )