Cortes, M
Thickbroom, G W
Elder, J
Rykman, A
Valls-Sole, J
Pascual-Leone, A
Edwards, D J
Article History
Received: 29 March 2016
Revised: 22 July 2016
Accepted: 26 September 2016
First Online: 20 December 2016
Competing interests
: The authors declare no conflict of interest.