Fig. 1From: Histamine-2 receptor antagonists versus proton pump inhibitors for septic shock after lower gastrointestinal tract perforation: a retrospective cohort study using a national inpatient databaseFlow chart for patient inclusion. Abbreviations: H2RA, histamine-2 receptor antagonists; PPI, proton pump inhibiter; HIV, human, human immunodeficiency virus; AIDS, acquired immunodeficiency syndromeBack to article page