Yee-Sin Leo*, Tun L Thein, Dale A Fisher, Jenny G Low, Helen M Oh, Rajmohan L Narayanan, Victor C Gan, Vernon J Lee and David C Lye
* Corresponding author: Yee-Sin Leo yee_sin_leo@ttsh.com.sg
BMC Infectious Diseases 2011, 11:123 doi:10.1186/1471-2334-11-123