Teo, Y L
Wee, H L
Chue, X P
Chau, N M
Tan, M-H
Kanesvaran, R
Wee, H L
Ho, H K
Chan, A
Article History
Received: 8 September 2014
Revised: 18 November 2014
Accepted: 28 January 2015
First Online: 17 March 2015
Competing interests
: Drs Kanesvaran, Wee and Chan serve as consultants to GlaxoSmithKline (Kanesvaran and Chan), Pfizer (Hwee Lin Wee), Novartis Asia Pacific (Hwee Lin Wee) and Abbvie Pte (Hwee Lin Wee). The remaining authors declare no conflict of interest.