Text and Data Mining valid from 2017-01-04
Received: 21 July 2016
Accepted: 24 November 2016
First Online: 4 January 2017
: RC is a paid consultant on Mallinckrodt Pharmaceuticals’ advisory boards. His role on the advisory boards is unrelated to the present study. JG is the recipient of NIH/NLM grant #R01 LM012012A. All other authors declare no competing interests.