Statistics from Altmetric.com
Handling editor Runjan Chetty.
Contributors SSK, SKL and BFR: substantial contributions to the conception or design of the work, or the acquisition, analysis or interpretation of data. SSK, SKL and DSC: drafting the work or revising it critically for important intellectual content. SSK and DSC: final approval of the version published. All authors: agreement to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Disclaimer The opinions or assertions contained herein are the private views of the authors and are not to be construed as official or as reflecting the views of Southern California Permanente Medical Group.
Competing interests None declared.
Patient consent for publication Not required.
Ethics approval Collection of tissue and study protocols was approved by the institutional review board at Kaiser Permanente Southern California (KPSC IRB#11231).
Provenance and peer review Not commissioned; externally peer reviewed.
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.