This article (1) has been retracted at the request of the editors. Following an internal review, it was determined that authorship of the original article is disputed. Eight individuals who attest that they were unaware of the submitted manuscript and did not agree to their authorship were removed as authors in a prior Correction (2).
A copy of this Retraction Notice was sent to the last known email addresses for the three remaining authors. One author (Songhui Xu) did not agree to the retraction; two authors (Donge Tang, Yong Dai) did not respond.