Funding for this research was provided by:
scientific research fund project of Nanjing Institute of Technology (YKJ201523)
scientific research fund project of Nanjing Institute of Technology (YKJ201408)
scientific research fund project of Nanjing Institute of Technology (QKJA201504)
Article History
First Online: 11 March 2019
Compliance with ethical standards
:
: Shi Jianzhong has received research grants from Nanjing Institute of Technology. Liang Shaohua has received research grants from Nanjing Institute of Technology. Yang Yong has received research grants from Nanjing Institute of Technology. Shi Jianzhong declares that he has no conflict of interest. Liang Shaohua declares that he has no conflict of interest. Yang Yong declares that she has no conflict of interest. Li Rong declares that he has no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.
: Informed consent was obtained from all individual participants included in the study.