It's a good thing this is basically happening between semesters. I look scary now and my voice is shot. But the body, even the post-middle-age body, is an incredible thing.
I want to thank everybody who shook my hand or sent me an encouraging message through email or Facebook. There's never any need to feel called upon to say something special in such a case; I can tell you every expression of good wishes is gratefully banked and adds to the strength I can bring to bear in the situation.
(But when a friend quoted a line from an old Simpsons episode to me, "Chicks dig scars," that was kind of extra bonus special. :) )