Zhai, Haohan
Geng, Hongni
Bai, Bo
Wang, Yulong
Article History
First Online: 27 September 2018
Compliance with ethical guidelines
:
: H. Zhai, H. Geng, B. Bai and Y. Wang declare that they have no competing interests.
: The present investigation was approved by the Ethics Committee of the First Affiliated Hospital of Guangzhou Medical University.