Text and Data Mining valid from 2018-09-25
Received: 3 August 2018
Revised: 12 September 2018
Accepted: 14 September 2018
First Online: 25 September 2018
Compliance with ethical standards
: The authors all declare no potential conflicts of interest.
: This study was approved by the Shanghai General Hospital Institutional Review Board. This study has been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki. This study involved human participants.
: Informed consent was obtained from the patients’ families.