Funding for this research was provided by:
Advanced Suitable Technology Popularization Project of Shanghai Health System (2013SY073)
Article History
Received: 21 February 2019
Accepted: 19 April 2019
First Online: 3 May 2019
Compliance with ethical standards
:
: The authors declare no conflicts of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.
: This article does not contain any studies with human participants performed by any of the authors. Therefore, informed consent is not included.