call me a pedant but PFR is an initialism, not an acronym.

And according to acronyms.thefreedictionary.com/PFR PFR is short for Peak Urinary Flow Rate which it isn't but could be pronounced if done properly, and thus would be an acronym. I bet pfr will be amused!

Hey! Doesn't pfr work in a supermarket? - Which sort of makes him a Grocer, and Grocers do what Grocers do with apostrophes ........................