Comment on: The efficacy and safety of hydrotherapy in patients with knee osteoarthritis: A meta-analysis of randomized controlled trials

aDepartment of Orthopaedics, Tianjin Hospital, No. 406, Jiefangnan Road, Hexi District, Tianjin, 300211, China bTianjin Institute of Orthopedics in Traditional Chinese and Western Medicine, No. 122, Munan Road, Tianjin, 300050, China Zhihu Zhao and Wei Luo contributed equally to this article and should be listed as co-first authors. The original contributions proposed in the study are included in these paper/supplementary materials. Please contact the corresponding author directly for further inquiry. Sponsorships or competing interests that may be relevant to content are disclosed at the end of this article. Published online ■ ■ *Corresponding author. Address: Department of Orthopaedics, Tianjin Hospital, No. 406, Jiefangnan Road, Hexi District, Tianjin, 300000, China. E-mail address: [email protected] (X. Ma). This is an open access article distributed under the terms of the Creative Commons Attribution-Non Commercial License 4.0 (CCBY-NC), where it is permissible to download, share, remix, transform, and buildup the work provided it is properly cited. The work cannot be used commercially without permission from the journal. http://creativecommons.org/licenses/by-nc/4.0/