Funding for this research was provided by:
BlueCross BlueShield of South Carolina Foundation (P-1606-08494)
Text and Data Mining valid from 2018-10-24
Received: 26 September 2017
Accepted: 15 October 2018
First Online: 24 October 2018
Ethics approval and consent to participate
: This study was approved by the University of California, San Francisco Institutional Review Board (study number: 11–05827). This study did not include direction patient contact and thus formal consent was not obtained.
: The authors declare that they have no competing interests.
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