- Correspondence to Dr Elizabeth A Smith, Social and Behavioral Sciences, University of California San Francisco, San Francisco, CA 94143, USA;
- Received March 27, 2019
- Revised August 21, 2019
- Accepted August 26, 2019
- First published September 21, 2019.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.