Expression of concern: “Central giant cell granuloma of the mandibular condyle: A rare case and a literature review” [Heliyon 6 (2020) e03085]

A post-publication investigation conducted by the Elsevier's Research Integrity & Publishing Ethics team on behalf of the journal could not confirm whether or not ethical approval was given for the research presented in this publication in line with the journal's policy. Furthermore, the investigation could not confirm whether or not the patient provided informed consent for this publication, in line with the journal's policy. The Editors are publishing this Expression of Concern to alert readers.