From ISOGG Wiki
During several automated bot runs the following external link was found to be unavailable. Please check if the link is in fact down and fix or remove it in that case!
http://jech.bmj.com/cgi/pmidlookup?view=long&pmid=16100312 -- WikiBot 21:38, 31 January 2012 (EST)
- Link seems to be valid - TomHutchison 22:02, 3 February 2012 (EST)