Robotic cholecystectomy with new port sites

Table 1 Clinical characteristics

	RC (n = 178)
Age (yr)	40.1 ± 9.8
Gender (male/female)	83/95
Laboratory findings
White blood cell count (/m3)	7483.4 ± 2670.8
AST (IU/L)	62.9 ± 124.0
ALT (IU/L)	68.9 ± 134.4
Total bilirubin (mg/dL)	1.0 ± 0.9
Combined diseases
Diabetes mellitus	5
Hypertension	29
Ischemic heart disease	0
COPD	0

RC: Robotic cholecystectomy; AST: Aspartate aminotransferase; ALT: Alanine aminotransferase; COPD: Chronic obstructive pulmonary disease.