"Would you like to have free custom searches of Medline abstracts
delivered to your email address on a weekly basis? All you need to do
is visit http://www.slackinc.com/spn/medline , fill out your name and
email address and let us know what custom keyword or phrase you would
like Medline abstracts on. Then, on a weekly basis you will receive
links to all the latest Medline abstracts on hypertension, myocardial
infarction and your custom keyword.
Once you start receiving your custom Medline emails, you will also be
able to change or modify the custom keyword you have selected or
unsubscribe from the service."