Appendix 1. The acupuncture points used in this study.

Acupuncture point Location Procedure
Baihui (GV20) The midpoint of the connecting line between the auricular apices 3 cm deep oblique insertion toward nose
Xin Shu (BL15) In the upper back region, at the same level as the inferior border of the spinous process of the fifth thoracic vertebra (T5), 1.5 B-cun lateral to the posterior median line 3 cm deep perpendicular insertion and both sides
Gan Shu (BL18) In the upper back region, at the same level as the inferior border of the spinous process of the ninth thoracic vertebra (T9), 1.5 B-cun lateral to the posterior median line 3 cm deep perpendicular insertion and both sides
Fenglong (ST40) On the anterolateral aspect of the leg, lateral border of the tibialis anterior muscle, 8 B-cun superior to the prominence of the lateral malleolus 3 cm deep perpendicular insertion and both sides
Dazhui (GV14) In the posterior region of the neck, in the depression inferior to the spinous process of the seventh cervical vertebra (C7), on the posterior median line 3 cm deep perpendicular insertion
Yanglingquan (GB34) On the fibular aspect of the leg, in the depression anterior and distal to the head of the fibula 3 cm deep perpendicular insertion and both sides