Received: 3 August 2020
Accepted: 17 February 2021
First Online: 10 March 2021
Ethics approval and consent to participate
: The authors assert that all procedures contributing to this work comply with the ethical standards of the relevant national and institutional committees on human experimentation and with the 1975 Declaration of Helsinki, as revised in 2008. All procedures involving human participants/patients were approved by the institutional review board of the University of Freiburg registered under the number 494/17 and the institutional review board of Peking Union Medical College Hospital registered under the number S-K276.All patients who provided written informed consent filled in questionnaires for general information and quantitative assessment of psychopathology.
: Not Applicable.
: All authors declare that they have no competing interests.