The citation should include the grant number and the awarding Institute or Center, followed by a disclaimer. Some examples:
This publication [or web site] was partially supported by Grant Number R01 LM1234 from the National Library of Medicine, NIH.A standard disclaimer should follow, such as:
The contents of this report [or web site] are solely the responsibility of the authors and do not necessarily represent the official views of the National Library of Medicine or NIH, DHHS.