Funding for this research was provided by:
Chang Gung Memorial Hospital, Linkou (CMRPG3E2131, BMRP 274)
Text and Data Mining valid from 2019-06-24
Received: 2 June 2018
Accepted: 18 June 2019
First Online: 24 June 2019
Ethics approval and consent to participate
: This study was approved by the institutional review board of Chang Gung Memorial Hospital, Linkou Medical Center, Taoyuan, Taiwan. The written informed consents were obtained from all subjects before their involvement in the study.
: Not applicable.
: The authors declare that they have no competing interests.