Funding for this research was provided by:
National Natural Science Foundation of China (81771023, 81470705, 81500803, 81771024)
the Major State Basic Research Development Program of China (973 Program) (2014CB541702, 2014CB943003)
National Institutes of Health/National Institute on Deafness and Other Communication Disorders (R01 DC012115, R01 DC01246, R01 DC05575)
the China Postdoctoral Science Foundation (2017M620359)
Text and Data Mining valid from 2018-04-01
Received: 20 December 2017
Accepted: 16 April 2018
First Online: 30 April 2018
Compliance with ethical standards
: The authors declare no conflict of interest.
: The study was approved by the Medical Ethics Committee of Xiangya Hospital, Central South university, in Hunan Province, China.
: The raw data can be made available on reasonable request to researchers, after publication.