Varnell, Jason A.
Tse, Edmund C. M.
Schulz, Charles E.
Fister, Tim T.
Haasch, Richard T.
Timoshenko, Janis
Frenkel, Anatoly I.
Gewirth, Andrew A.
Article History
Received: 9 February 2016
Accepted: 13 July 2016
First Online: 19 August 2016
Competing interests
: The authors declare no competing financial interests.