Thanks for looking. I work with a physician who is also an informatician (medical informatics) and I am a nursing student in informatics. As he is an expert in reference terminologies (medical), I wanted to get a credible reference to the word to explain my use (oops) of the word. When I found it, I wondered if it was used in error by the references that I found, or if there was a source that would explain this variation. I'll keep searching!