Funding for this research was provided by:
Tri-Service General Hospital (TSGH-C108-007-008-S06, TSGH-C108-189)
Tri-Service General Hospital, Republic of China (TSGH-C105-164, TSGH-C106-004-006-008-S05, TSGH-C106-144)
Ministry of National Defense, Republic of China (MAB-106-090)
National Science Council, Taiwan, Republic of China (MOST 105-2314-B-016-021-MY3)
Text and Data Mining valid from 2019-11-15
Received: 20 October 2017
Accepted: 30 October 2019
First Online: 15 November 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: The Ethical Committee of the Tri-Service General Hospital (Taipei, Taiwan) approved this retrospective study (institutional review board protocol no.: 2-106-05-082).
: Informed consent was obtained from all the individual participants included in the study.