Retraction Retraction dated 2019-06-04

Article History

Received: 29 May 2017

Accepted: 20 September 2017

First Online: 6 October 2017

Change Date: 4 June 2019

Change Type: Correction

Change Details: The Editors-in-Chief have retracted this paper [1] because its results are invalid. The paper also shows significant overlap with a paper by Yang et al. [2], which was simultaneously under consideration with another journal. Additionally, this paper showed evidence of peer review and authorship manipulation. The authors have not responded to any correspondence with regards to this retraction.

Competing interests

: The authors declare that they have no competing interests.