Text and Data Mining valid from 2019-06-07
Received: 23 January 2018
Accepted: 29 May 2019
First Online: 7 June 2019
Ethics approval and consent to participate
: All the participants signed the consents forms and agreed to participate and the study was approved by National Taiwan University Hospital Research Ethics Committee (Reference Number: 201706006RIND).
: Not applicable.
: The authors declare that they have no competing interests.