@gravity3 I wasn't looking for support here, just information. Plus I almost always start with Google. I may not not be the world's best researcher, and Google seems less and less helpful in recent years, but had I found the answer there I wouldn't have come here.

I did find a couple of helpful responses, particularly Gloaming's last one, for which I'm appreciative. But I have little patience in forums like these when people post responses that completely ignore the specific questions posed. It's like these folks like to hear themselves "talk" or something, regardless of whether they have anything to contribute. Others almost address the question but don't really answer it.

Having said that, the vast majority of people in this group and others are just trying to help, so I suppose I just need a bit more patience, A trait that would probably help my heart health as well:)