Stobaugh, Derrick J Hospitalizations for vaccine preventable pneumonias in patients with inflammatory bowel disease: a 6-year analysis of the Nationwide Inpatient Sample. [electronic resource] - Clinical and experimental gastroenterology 2013 - 43-9 p. digital Publication Type: Journal Article ISSN: 1178-7023 Standard No.: 10.2147/CEG.S42514 doi