Article History
Received: 19 March 2019
Accepted: 13 June 2019
First Online: 25 June 2019
Compliance with ethical standards
:
: The author declares no conflict of interest.
: Informed consent was obtained from the participant included in the study.
: The study has been approved by the Ethics committee of Chung general hospital and has been performed in accordance with the ethical standards as laid down in the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards.