Article History
Received: 23 February 2018
Accepted: 16 March 2018
First Online: 28 March 2018
Compliance with ethical standards
: This study was approved by the Institutional Review Board on Human Studies of the Ethical Committee of China-Japan Friendship hospital, and informed consent was obtained from all the patients.
: We did not receive any benefits directly or indirectly from commercial parties.
Free to read: This content has been made available to all.