Zhang, Tong
Ma, Zhenjiang
Liu, Lijuan
Sun, Jian
Tang, Hui
Zhang, Bing
Zou, Ying
Li, Heping
Article History
Received: 23 October 2017
Revised: 12 April 2018
Accepted: 13 April 2018
First Online: 4 June 2018
Change Date: 19 January 2022
Change Type: Clarification
Change Details: Editor's Note: Concerns have been raised about the integrity of the data reported in this article. This is currently being investigated. Further editorial action may be taken as appropriate once the investigation into the concerns is complete and all parties have been given an opportunity to respond in full.
Conflict of interest
: The authors declare that they have no conflict of interest.