Liu, Gang
Wang, Lu
Li, Yi
Article History
Received: 3 April 2020
Accepted: 9 August 2020
First Online: 9 September 2020
Compliance with ethical standards
: Ethical approval and informed consent were obtained from the Ethical Committee at the Department of Internal Medicine, Tianjin Huanhu Hospital, Tianjin, China.
: The authors declare that they have no conflict of interest.