I don't know if anyone else on this discussion list knows about or has ever
used HubMed (www.hubmed.org), an alternate interface to PubMed.  But if you
have, did you know the site appears to be defunct now?  If this is
temporary, relief.  If not, well, it'll be upsetting.  This is a very handy
and feature rich site that I've used quite a bit lately, especially the
Citation Finder part.

Steve