Sham EA group
Participants in the sEA group will receive acupuncture at non-disease related acupoints: Pianli (LI6) bilateral, Wenliu (LI7) bilateral, Fuyang (BL59) bilateral, Kunlun (BL60) bilateral, Sanyangluo (TE8) bilateral, Sidu (TE9) bilateral, and Daheng (SP15) bilateral with a superficial insertion and 2 Hz stimulation on each acupoint continuously for 30 min. The sEA provides minimal electrical stimulation with no distinguishable difference in sound as vEA.Throughout the trial, all the participants will be treated separately to prevent communication. Furthermore, to ensure proper reporting of our acupuncture-based study, we referenced the STRICTA 2010 checklist shown in Table 
STRICTA 2010 checklist2c) Depth of insertion, based on a specified unit of measurement, or on a particular tissue level

