Locations of acupoints for the SA group
| Non-acupoint | Locations |
| Non-acupoint 1 | 5 cun* directly above wrist, 2 cun directly lateral to Ximen (PC4). |
| Non-acupoint 2 | 3 cun directly above belly button, 1 cun on the left side of the front middle line. |
| Non-acupoint 3 | 1 cun directly lateral to the belly button. |
| Non-acupoint 4 | In the middle of Yanglingquan (GB34) and Zusanli (ST36). |
| Non-acupoint 5 | 3 cun directly below Yanglingquan (GB34). |
*1 cun (≈20 mm) is defined as the width of the interphalangeal joint of the patient’s thumb.
GB, gallbladder; PC, pericardium; SA, sham electroacupuncture; ST, stomach.