Funding for this research was provided by:
National Institutes of Health (U01AR052177)
Text and Data Mining valid from 2018-12-11
Accepted: 26 November 2018
First Online: 11 December 2018
<!--Emphasis Type='Bold' removed-->Compliance with ethical standards
: David Tulsky, Alan Jette, Bryce Reeve, and Darren DeWalt received a research grant from the National Institutes of Health. All other authors declare no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.