Zipfile contaiing code mappings used during the production of the first-occurrence fields.

This resource is not suitable for displaying within a web-browser.
It can be downloaded or viewed using the link: FirstOccurence_CodeMappings.zip

If you have wget available (typically on linux systems), then you can also obtain a copy using the command

 wget  -nd  biobank.ctsu.ox.ac.uk/ukb/ukb/auxdata/FirstOccurence_CodeMappings.zip