HCl	hydrochloric acid
H2RB	histamine-2 receptor blocker
PPI	proton pump inhibitor
GERD	gastro-esophageal reflux disease
ECL	enterochromaffin-like
RR	relative risk
OR	odds ratio
CDI	Clostridium difficile infection
rCDI	recurrent Clostridium difficile infection
ICU	intensive care unit
HR	hazard ratio
SBP	spontaneous bacterial peritonitis
HE	hepatic encephalopathy