Text and Data Mining valid from 2019-01-21
Received: 25 October 2018
Accepted: 19 December 2018
First Online: 21 January 2019
Compliance with ethical standards
: All authors declare no conflict of interest.
: The Ramathibodi Ethic Committee approved a waiver of consent for this study as a retrospective chart review. Archrival tissues used in this study were considered as a leftover specimen. The research involves no more than minimal risk to the subject and is not adversely affect the rights and welfare of the subjects. All patient identifications were protected according to the GCP guideline and not published in the manuscript. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.