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. 2022 Nov 25;101(47):e31680. doi: 10.1097/MD.0000000000031680

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Copyright © 2022 the Author(s). Published by Wolters Kluwer Health, Inc.

This is an open access article distributed under the Creative Commons Attribution License 4.0 (CCBY), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 2. — Spirit figure of enrollment, interventions, and assessments. NXT, patients will be given 4 Nao-Xin-Tong capsules and one bag of placebo granules 3 times daily; BYHW, patients will be given one bag of Bu-Yang-Huan-Wu granules and 4 placebo capsules 3 times daily; YYTN, patients will be given one bag of Yang-Yin-Tong-Nao granules and 4 placebo capsules 3 times daily. Placebo, patients will be given one bag of placebo granules and 4 placebo capsules 3 times daily. NXT = Nao-Xin-Tong, SAQ = the Seattle angina questionnaire, YYTN = Yang-Yin-Tong-Nao.