We do ask you to permanently remove and destroy the PUMF from the 1971 Smoking Habits Survey that you may have on any system that makes this file accessible to users. The PUMFs from the same survey for 1972 and on-going are ok but not the 1971. I would appreciate your collaboration in this matter. If you know of any users having access or using that file, please advise them not to. We did find problems with the content and it cannot be corrected. This is why we ask you to destroy it. The collection for this survey will only be from 1972. We also have removed this PUMF from the DLI collection.
Thanks and sorry for the inconvenience.