| | Author/year (number) | Acupuncture and acupoints |
| | Liang 2020 [20] | Electro-acupuncture, 5 points, CV4 (Guanyuan), SP6 (Saninjiao, bilateral), and SP9 (Yinlinquan, bilateral) | | Xia et al. 2020 [21] | Tiaoshen acupuncture, 14 points, HT7 (Shenmen), GV24 (Shenting), GB13 (Benshen, bilateral), BL24 (Qihai), CV4 (Guanyuan), CV3 (Zhongji), ST28 (Shuidao, bilateral), SP6 (Sanyinjiao), ST36 (Zusanli), BL63 (Jinmen), KI5 (Shuiquan), and LR3 (Taichong) | | Yang et al. 2018 [27] | Acupuncture, 4 points, BL23 (Shenshu), BL33 (Zhongliao), BL35 (Huiyang), and SP6 (Sanyinjiao) | | Chen et al. 2016 [28] | Acupuncture, 21 points, DU24 (Shenting), DU22 (Xinhui), DU21 (Qianding), DU20 (Baihui), BL6 (Chengguang), BL7 (Tongtian), BL8 (Luoque), DU18 (Qiangjian), DU17 (Naohu), BL9 (Yuzhen), BL10 (Tianzhu), CV3 (Zhongji), CV4 (Guanyuan), ST29 (Guilai), KI12 (Dahe), ST31 (Biguan), ashi points, BL28 (Pangguangshu), BL32 (Ciliao), BL54 (Zhibian), and GB30 (Huantiao) | | Guo and Wang 2018 [29] | Acupuncture, 7 points, CV4 (Guanyuan), SP6 (Sanyinjiao), CV3 (Zhongji), SP10 (Xuehai), ST36 (Zusanli), BL20 (Pishu), BL23 (Shenshu), acupoint injection, 2 points, BL54 (Zhibian), and BL32 (Ciliao) | | Xie et al. 2021 [22] | Acupuncture, 4 points, BL23 (Shenshu), BL33 (Zhongliao), BL35 (Huiyang), and SP6 (Sanyinjiao) | | S. H. Lee and B. C. Lee 2008 [32] | Acupuncture, 4 points, CV4 (Guanyuan), CV1 (Huiyin), SP6 (Sanyinjia), and SP9 (Yinlingquan) | | Lee et al. 2011 [30] | Acupuncture, 4 points, CV4 (Guan Yuan), CV1 (Huiyin), SP6 (Sanyinjiao), and SP9 (Yinlingquan) | | Qin et al. 2018 [31] | Acupuncture, 5 points, BL33 (Zhongliao, bilateral), BL23 (Shenshu), BL35 (Huiyang), and SP6 (Sanyinjiao) | | Sahin et al. 2015 [33] | Acupuncture, 7 points, BL33 (Zhongliao), BL34 (Xialiao), BL54 (Zhibian), CV1 (Huiyin), CV4 (Guanyuan), SP6 (Sanyinjiao), and SP9 (Yinlingquan) |
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