Funding for this research was provided by:
George Washington University (NA)
Text and Data Mining valid from 2019-05-21
Received: 5 April 2019
Revised: 22 April 2019
Accepted: 30 April 2019
First Online: 21 May 2019
Ethics approval and consent to participate
: Informed consent was obtained from all patients prior to engaging in study activities. The study was approved by The George Washington University Institutional Review Board (IRB no. 011616).
: Consent has been obtained from all authors.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.