Funding for this research was provided by:
Shanghai Shengkang Hospital Development Center (16CR3107B)
Received: 2 October 2019
Accepted: 10 February 2020
First Online: 18 February 2020
Compliance with ethical standards
: Drs. Chong-Yi Jiang, Yun Liang, Yin-Tao Chen, Zheng-Shou Dai and Wei Wang have no conflicts of interest or financial ties to disclose.