. The authors have been contacted by the Editorial Office to offer an explanation for the issues described above, and we are awaiting their response. Owing to the fact that the Editorial Office has been made aware of potential issues surrounding the scientific integrity of this paper, we are issuing an Expression of Concern to notify readers of this potential problem while the Editorial Office continues to investigate this matter further. International Journal of Molecular Medicine 42: 2343‑2352, 2018; DOI: 10.3892/ijmm.2018.3842.
Zhang et al. (Wed,) studied this question.