In the EA group , the selected acupoints were Danzhong ( CV @ ) , Qimen ( LR @ ) , Zhongwan ( CV @ ) , Tianshu ( ST @ ) , Guanyuan ( CV @ ) , Zigong ( EX-CA @ ) , Sanyinjiao ( SP @ ) , Zusanli ( ST @ ) and Taichong ( LR @ ) , etc. .