Text and Data Mining valid from 2018-05-16
Received: 2 February 2018
Accepted: 14 March 2018
First Online: 16 May 2018
: Not applicable.
: The study was approved by the Cleveland Clinic Institutional Review Boards.
: Informed consent has been obtained and are held by the 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.