Endoscopy for acute upper GI tract hemorrhage: sooner is better.

@article{Spiegel2009EndoscopyFA,
  title={Endoscopy for acute upper GI tract hemorrhage: sooner is better.},
  author={Brennan M. R. Spiegel},
  journal={Gastrointestinal endoscopy},
  year={2009},
  volume={70 2},
  pages={
          236-9
        }
}