UpToDate (autodirect from NUS libraries)
libproxy1.nus.edu.sg/login?url=http://www.uptodateonline.com

Healthcare Statistics
Hospital Bill Sizes/Case Load

Internal Medicine
Jansen Koh's MRCP Notes

Paediatrics
MRCPCH 2009 Notes

Links to the a ton of study resources (aka Medacad Gmail files)