Erratum for

• Efficacy of intra-articular polynucleotides associated with hyaluronic acid vs hyaluronic acid alone in the treatment of knee osteoarthritis: A systematic review and meta-analysis of randomized clinical trial.

  Zhang L, Lei N, Chang R, Yang C, Li Q, Zuo N, Gu Y. Zhang L, et al. Medicine (Baltimore). 2020 Jun 12;99(24):e20689. doi: 10.1097/MD.0000000000020689. Medicine (Baltimore). 2020. PMID: 32541518 Free PMC article.
• Guipi decoction for insomnia: Systematic review and meta-analysis.

  Li M, Lan R, Wen Y, Shi K, Yang D. Li M, et al. Medicine (Baltimore). 2020 Jul 2;99(27):e21031. doi: 10.1097/MD.0000000000021031. Medicine (Baltimore). 2020. PMID: 32629727 Free PMC article.
• A systematic review and meta-analysis of acupuncture treatment for oral ulcer.

  Yan H, Jin Z, Jin W, Zhong Y, Ai H, Wu Y, Xu Q, Bai X, Liu D, Nie W, Zuo Y. Yan H, et al. Medicine (Baltimore). 2020 Jul 17;99(29):e21314. doi: 10.1097/MD.0000000000021314. Medicine (Baltimore). 2020. PMID: 32702927 Free PMC article.
• Gray matter alterations in restless legs syndrome: A coordinate-based meta-analysis.

  Sheng L, Zhao P, Ma H, Qi L, Yi Z, Shi Y, Zhong J, Shi H, Dai Z, Pan P. Sheng L, et al. Medicine (Baltimore). 2020 Jul 17;99(29):e21374. doi: 10.1097/MD.0000000000021374. Medicine (Baltimore). 2020. PMID: 32702936 Free PMC article.
• Current trends in health coaching for chronic conditions: A systematic review and meta-analysis of randomized controlled trials.

  Yang J, Bauer BA, Lindeen SA, Perlman AI, Abu Dabrh AM, Boehmer KR, Salinas M, Cutshall SM. Yang J, et al. Medicine (Baltimore). 2020 Jul 24;99(30):e21080. doi: 10.1097/MD.0000000000021080. Medicine (Baltimore). 2020. PMID: 32791680 Free PMC article.
• The effectiveness and safety of traditional Chinese medicine for the treatment of children with COVID-19.

  Li Y, Bi L, Li Y, Hu X, Wang Q, Liang X, Yu X, Dong L, Xie Q. Li Y, et al. Medicine (Baltimore). 2020 Jul 24;99(30):e21247. doi: 10.1097/MD.0000000000021247. Medicine (Baltimore). 2020. PMID: 32791699 Free PMC article.
• A systematic review and meta-analysis of the efficacy and safety of arbidol in the treatment of coronavirus disease 2019.

  Wang X, Xie P, Sun G, Zhao M, Deng Z, Zhou Y, Bao S. Wang X, et al. Medicine (Baltimore). 2020 Jul 24;99(30):e21402. doi: 10.1097/MD.0000000000021402. Medicine (Baltimore). 2020. PMID: 32791753 Free PMC article.