Shih, P.-K. http://orcid.org/0000-0003-2385-2065
Article History
Received: 23 June 2018
Accepted: 8 November 2018
First Online: 13 November 2018
Compliance with ethical standards
:
: PKS (Pin-Keng Shih) declares no conflict of interest.
: This study was approved by the ethical committee of China Medical University.
: The study including human participants has been performed in accordance with the ethical standards of the Declaration of Helsinki and its later amendments.
: All patients provided written informed consent.