Retraction Retraction dated 2017-11-10

Article History

Received: 8 February 2016

Accepted: 10 March 2016

First Online: 7 April 2016

Change Date: 10 November 2017

Change Type: Correction

Change Details: “This article has been retracted by the Publisher in agreement with the Editor-in-Chief, because it contains portions of writings on the same topic already published and without sufficient attribution to these earlier works being given. The principal authors of the paper acknowledged that text from background sources was mistakenly used in this article without proper reference to the original source. Upon investigation carried out according to the Committee on Publication Ethics guidelines, it has been found that the authors have duplicated or rephrased parts from other articles of which the main sources.

Compliance with Ethical Standards

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: The authors declare that they have no competing of interests.