The observation group was treated with routine acupuncture at Dazhui ( GV 14 ) , Jingbailao ( Ex-HN 15 ) and Jianzhongshu ( SI 15 ) ; and the control group was treated with sham acupuncture at 1 cm lateral to Bailao ( Ex-HN 15 ) and Jianzhongshu ( SI 15 ) .
