Manual acupuncture ( MA ) stimulation was applied to Baihui ( GV 20 ) , Danzhong ( CV 17 ) , Qihai ( CV 6 ) , Guanyuan ( CV 4 ) , bilateral Zusanli ( ST 36 ) , Hegu ( LI 4 ) , Taichong ( LR 3 ) and Sanyinjiao ( SP 6 ) for patients in the acupuncture group .