Anne said:Is the full text for the retrospective study available anywhere online for free?
Not that I know of. You may be able to request a copy through InterLibrary Loans through your local public library. I do not know what the cost of a photocopy would be.
The full information for requesting a photocopy is:
Title: A Retrospective Study of Daylily Toxicosis in Cats
Authors: RM Hadley, JA Richardson, and SM Gwaltney-Brant
Journal: Vet. Human Toxicol. Volume 45 Issue 1 pages 38-39, 2003