Guo, Yongwei
Koch, Konrad R.
Heindl, Ludwig M.
Funding for this research was provided by:
Universität zu Köln (2680148101)
China Scholarship Council (201708080141)
Article History
Received: 7 March 2019
Accepted: 16 April 2019
First Online: 1 May 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: Informed consent was obtained from the patient included in the study.