Additional file 1: of Guanxinjing capsule in the treatment of chronic stable angina: study protocol for a randomized controlled trial TianYing ZhangJunhua ZhaoYingqiang MaoJingyuan ZhuLinping GaoRui WangXuemei ZhuMingjun MaLihong ZhaoMengyu ZhengWenke 2018 GAD-7 (General Anxiety Disorder-7) test. (DOCX 50 kb)