did your kids have an adnormal liver test result? when they first tested me for cf, i had a pancreatic insuffiency/pancretitis,part of my liver was destroyed,damanged lungs. they recheck my liver like once every 6 mos,more of it is damanged, but they said thats is slowly getting damanged so im guessing to anwser one of your questions its a slow progress,however this is why i have such bad stomach pains and i have to take pain meds for it. how old are ya kids again? i hope its gets better for them and for all of us with cf and maybe tomorrow there will be a cure!!!!!!!!
best of luck