Locate DOI's in PubMed instead of Ovid MEDLINE

I checked into & was surprised to discover that there were no doi's to be found in the MEDLINE citations I checked.
Below is... ...Ovid's response.
The principal message: if you need to locate doi's, don't do it via OvidMEDLINE; use PubMed or other databases.

Susanne Tabur
Oct. 4, 2010

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I checked with our database production team for information on why some articles had DOI information in PubMed and not in Ovid’s Medline. They told me that the NLM hosts some DOI information on a separate server and the NLM does not provide it to any vendors. I’m including database production’s response to me incase it has useful information that I failed to mention. When I asked for clarification on their statement below I was told that while it was in theory possible to daily data mine the NLM site for data they hold beyond what they provide in the XML feed it was outside the scope of our offering.

We do not receive fields in the set with our XML daily update feeds from PubMed and never will. All Three of the records sighted by the customer the DOI information is only available on the NLM site in the field and is not provided to anyone. NLM’s response is this data lives on another server and will never be provided to outside customers. The only DOI information we receive is in the XML tag from NLM. When they provide us with all of the DOI information they have on their web site we will load it into our OvidSP version of Medline.

Neil Christiansen at OvidMedline
Sept. 30, 2010

Ovid MEDLINE Global Reload

Hello all,
Just a reminder that due to the reload we occasionally have questions early in the new year from those who have set up alerts in Ovid databases. They often wonder what has happened to their alerts. The reload sometimes delays new content from showing up in the alerts or the alerts themselves into early February. Please see below.
Sandra

-------- Original Message --------
Subject: 2009 Ovid MEDLINE® Global Reload
Date: Thu, 11 Dec 2008 14:48:14 -0800
*2009 Ovid MEDLINE® Global Reload*
*Dear Ovid Customer:*

We are working on the dataset for the 2009 Global Reload and look forward to completing the 2009 MEDLINE regeneration as quickly as possible. At this point, we expect that the reload will be live on OvidSP in mid-late January 2009*. *

As a reminder:

* The last MEDLINE Daily update went out on November 19, 2008.
* The last MEDLINE Weekly update went out on November 24, 2008.

No substantive field changes are currently planned for this reload. A complete description of the 2009 MeSH thesaurus changes are available by linking to:
http://www.nlm.nih.gov/mesh/whatsnew.html

If you should have any questions during this time, please contact us at
wkhealth-support@wolterskluwer.com

Sincerely, Ovid Technologies