Samniang, Bencharunan
Shinlapawittayatorn, Krekwit
Chunchai, Titikorn
Pongkan, Wanpitak
Kumfu, Sirinart
Chattipakorn, Siriporn C.
KenKnight, Bruce H.
Chattipakorn, Nipon
Article History
Received: 28 August 2015
Accepted: 17 December 2015
First Online: 1 February 2016
Competing interests
: B.H.K. is an employee of Cyberonics Inc, however the other authors declare no competing financial interests.