Temporal trends in gastrointestinal bleeding associated with percutaneous coronary intervention: analysis of the 1998-2006 Nationwide Inpatient Sample (NIS) database
aDivision of Cardiology, University of Illinois at Chicago, Chicago, IL;bUniversity of California, Los Angeles, CA;cDivision of Epidemiology and Biostatistics and Cancer Center, University of Illinois at Chicago, Chicago, IL