Jong, Gwo-Ping
Chen, Hung-Yi
Li, Shu-Yi
Liou, Yi-sheng
Article History
Received: 6 December 2013
Revised: 14 April 2014
Accepted: 16 April 2014
First Online: 26 June 2014
Competing interests
: All the authors report receiving lecture fees from various pharmaceutical companies in Taiwan.