Prevalence and Cost of Hospitalization for Gastrointestinal Complications Related to Peptic Ulcers with Bleeding or Perforation: Comparison of Two National DatabasesBySheldon X. Kong, PhD,Hind T. Hatoum, PhD,Sean Z. Zhao, MD, PhD,Naurang M. Argrawal, MD,Steve G. Geis, MD, PhDMarch 1st 1998
