Early examples of transcutaneous blood glucose sensing

[GRSresearch]

Whom would you call if you wanted to know the history, the development and the state of the art of transcutaneous blood glucose sensing? I'm searching for prior art that calls into question the validity of certain patent claims relevant to transcutaneous blood glucose sensing. I'm looking for information that pre-dates 2005. Did you work on early blood glucose monitoring devices? Feel free to contact me with any questions or suggestions, I'd be happy to give you more details and speak with you offline.