Funding for this research was provided by:
Ministry of Science and Technology, Taiwan (107-2115-M-037-001)
Kaohsiung Medical University (KMUOR106)
National Natural Science Foundation of China (11361070)
Article History
Received: 24 May 2018
Accepted: 25 August 2018
First Online: 12 September 2018
Competing interests
: The authors declare that they have no competing interests.