Table 2 Location of non-acupoints in sham acupuncture group

On the upper abdomen, 1 inch beside ST25, between the Spleen Meridian and the Stomach Meridian

On the lower abdomen, 1 inch beside SP14, between the Spleen Meridian and the Stomach Meridian

On the lateral aspect of the elbow, at the midpoint between the Large Intestine Meridian and the Lung Meridian beside LI11

On the posterior aspect of the forearm, 6 cun proximal to the dorsal wrist crease, at the radial margin of the ulna

On the anterior aspect of the leg, at the midpoint between the Stomach Meridian and the Gallbladder Meridian beside ST37

On the dorsum of the hand, between the 3rd and 4th metacarpals, in the depression proximal to the 3rd metacarpophalangeal joint

On the dorsum of the foot, between the third and fourth metatarsal bones, in the depression distal to the junction of the bases of the two bones

On the anterior aspect of the leg, 3 cun below GB34, between the Stomach Meridian and the Gallbladder Meridian