IP Authenticated access to UpToDate has been restored for the campus at the University of Western Ontario and the London-area hospitals.
Links from Western Libraries' website and the Hospitals are currently functioning and off-site ("remote") access is available through Western Libraries' proxy servers.
On-campus & Hospital link: http://www.uptodate.com/online
Off-site: https://www.lib.uwo.ca/cgi-bin/ezpauthn.cgi?url=http://www.uptodate.com/online