Retraction notice to “Co(II)-coordination polymers: Magnetic properties and treatment activity on the chronic subdural hematoma via regulating the releasing of inflammatory cytokines” [J. Solid State Chem. 296 (2021) 121991]

This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal). This article has been retracted at the request of the Editor-in-Chief. In investigating concerns brought up regarding the authenticity of the article, the editors reached out to the corresponding author for an explanation. The corresponding author failed to provide a satisfactory explanation. The editors therefore feel that the findings of the manuscript cannot be relied upon and that the article needs to be retracted.