In the observation group , beside the basic treatment , EA was applied to bilateral Ezhongxian ( MS @ ) , Dingzhongxian ( MS @ ) , Dingniehouxiexian ( MS @ ) , Hegu ( LI @ ) , Taichong ( LR @ ) , Zusanli ( ST @ ) , Taixi ( KI @ ) , Xuanzhong ( GB @ ) and Fengchi ( GB @ ) .