Table 1. The frequencies of anatomical variants of the biliary system based on Huang classification .

Anatomical variant	Sex		Total
	Women	Men
Huang type A1 (%)	83 (22.9)	80 (22.1)	163 (45)
Huang type A2 (%)	38 (10.5)	40 (11)	78 (21.5)
Huang type A3 (%)	29 (8.1)	19 (5.2)	48 (13.3)
Huang type A4 (%)	5 (1.4)	8 (2.2)	13 (3.6)
Huang type A5 (%)	0	0	0
Non Huang type (%)	26 (7.2)	34 (9.4)	60 (16.6)
Total	181	181	362