Hi Bartfull,
thanks for the info. I've been gluten-free since May 5, 2014, and am scrupulous about it (except for 2 incidents of hidden gluten). I know something else is going on, as I still have 1 or 2 "attacks" a week, and can't figure out what is causing them (sometimes happens even if I haven't eaten or drank anything). So, I have more detective work...