Table 3.

Sham acupuncture points

Sham points	Location
Sham-Baihui (GV20)	0.5 cun lateral from GV20
Sham-Toulinqi (GB15)	At the midpoint of the line connecting GB15 and ST8 (0.5 cun above the hairline, at the corner of the forehead, 4.5 cun lateral from the midline), 0.5 cun within the anterior hairline
Sham-Guanyuan (CV4)	In the mid-way of CV4 and ST28, 1 cun lateral to the anterior midline, 3 cun below the umbilicus
Sham-Zhongwan (CV12)	In the mid-way of CV12 and ST21, 1 cun lateral to the anterior midline, 4 cun above the umbilicus
Sham-Tianshu (ST25)	In the mid-way of ST25 and SP15, 3 cun lateral to the umbilicus
Sham-Zusanli (ST36)	Horizontal to ST36, on the edge of the fibula
Sham-Sanyinjiao (SP6)	Horizontal to SP6, 3 cun above the depression between the tip of the medial malleolus and the tendo calcaneus (KI3)
Sham-Taichong (LR3)	In the depression distal to the junction of the 3rd and 4th metatarsal bones, between the stomach and gall bladder channel
Sham-Zhangmen (LR13)	In the mid-way of LR13 and ST23 horizontally, 2 cun above the umbilicus, on the outer edge of the rectus abdomius