Please forgive me if you wrote about this already, but I'm not thinking this is the same Dr. Katz. This is Dr. Stanley Katz. However, Dr. Shafer did a paper with a Dr. Nathaniel Katz. I'd rather you are correct, and you may show me, hopefully, that I am, but here is a PART of the paper, on anesthetics that the two doctors did together.
http://www.fda.gov/ohrms/dockets/ac/03/transcripts/3978T2.htm (http://www.fda.gov/ohrms/dockets/ac/03/transcripts/3978T2.htm)