Text and Data Mining valid from 2019-11-08
Received: 25 January 2019
Revised: 19 July 2019
Accepted: 6 September 2019
First Online: 8 November 2019
Compliance with Ethical Standards
: The study was approved by the institutional review board of the Johns Hopkins Bloomberg School of Public Health. The funding agency did not have a role in the design, conduct, or reporting of the study results.
: Dr. Boyd writes a chapter on multimorbidity for UpToDate, for which she receives a royalty. All remaining authors declare that they do not have a conflict of interest.