Funding for this research was provided by:
This material is the result of work supported with resources and the use of facilities at the Veterans Affairs Palo Alto Health Care System.
Text and Data Mining valid from 2019-06-10
Received: 21 May 2019
Accepted: 22 May 2019
First Online: 10 June 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interest.