Credit to the researchers and the [posthumous] study participants here. It is really hard to do this kind of work, involving enrollment of participants in their lifetimes, cognitive testing, and then having access to their brains after their death for study - much of this kind of neurology can't be done except post mortem.

The investigators and participants get a big vote of thanks here. The effort here is extraordinary; the researchers are all in Quebec, I think the study participants, members of Religious Orders, were too . . . but not clear on that.