Secondary literature on Nietzsche on disgust?

Jason Clark, a post-doc at the Institute for Cognitive Science at the University of Osnabrueck, writes with a request which some readers may be able to helep with:

I'm wondering if you know of anything in the Nietzsche literature that focuses on his theory of disgust?  With the exception of Menninghaus, my numerous searches have turned up little that specifically focuses on disgust, and nothing that tries to offer a comprehensive overview.  Any advice on where to look would be appreciated.