Funding for this research was provided by:
National Research Council of Thailand (NRMS_58/2561)
Mahidol University (2561)
Thailand research fund (IRN59W0004)
Faculty of Medicine Ramathibodi Hospital (CF_61004)
Text and Data Mining valid from 2019-12-01
Received: 26 April 2019
Accepted: 9 October 2019
First Online: 16 December 2019
Ethics approval and consent to participate
: The study (ID 07-59-05) was approved by the Faculty of Medicine Ramathibodi Hospital ethics committee and conducted according to the guidelines of the Declaration of Helsinki. Each participant gave written informed consent before enrollment.
: Not applicable.
: The authors declare that they have no competing interests.