Funding for this research was provided by:
Medical Science and Technology Foundation of Guangdong Province (2018A030313816)
Received: 31 January 2019
Accepted: 8 July 2019
First Online: 12 July 2019
Ethics approval and consent to participate
: The study protocol was approved by the Ethics Committees of Guangdong Provincial People’s Hospital. Written informed consent was provided by each patient.
: Not applicable.
: The author Fujun Jia is currently acting as an Associate Editor for BMC Psychiatry. Other authors declare that they have no competing interests.