Thank, that helps, although, I don't what all those big words mean. I'm sure my nephew, Ritchie would, He's a GI doctor. Truthfully, I'm not into medicine, though I have a good background in, having members of the family, who are in the medical profession, (i.e. Nursing, GI Medicine, and Pharmacology) I've had several ancestors in Medicine, but my specialty is RETAIL! I don't pretend to know everything in medicine, because there are times when I have question, but it's nice to know, I know where to take my medical ???s