Duan, Z.-K.
Zou, J.-F.
He, X.-L.
Huang, C.-D.
He, C.-J.
Article History
Received: 1 May 2019
Accepted: 25 September 2019
First Online: 18 November 2019
Compliance with ethical standards
: The study was approved by the Medical Ethics Committee of Guizhou Provincial People’s Hospital.
: None.