LuckyNiner, thank you. For saying such nice things. For reminding me that what I'm studying is going to be used for the benefit of people when (and if) I finish med school. When you're smack in the middle of the classroom part of it, you totally lose touch with that fact. And thank you for teaching me. At the very top of those suggestions I posted above, I should have listed your tip, which is cardio-vascular exercise. That does more benefit toward keeping the lungs clear than anything.

Thank you for your kindness--and for showing me yet again how very, very much I can learn from others!