Fig. 1

Cohort flow diagram. *Admissions involving kidney transplant surgery, dialysis access surgery, endovascular or endoluminal procedures, neurosurgery, ear, nose, and throat (ENT) surgery and dental surgery were not included
Cohort flow diagram. *Admissions involving kidney transplant surgery, dialysis access surgery, endovascular or endoluminal procedures, neurosurgery, ear, nose, and throat (ENT) surgery and dental surgery were not included