One of the comments there:
Unfortunately I managed to get this all screwed up. It should have been clearer that you don’t use all three kits. I ended up doing my stomach, liver and what I believe is a kidney although I don’t have enough medical experience to say for sure. It was very hard to use some of the tools while looking in the various mirrors I had set up. But, I got it done. At one point my wife came in, saw the mess and said I should have called a real doctor. Well, I showed her! I’m now happily eating, drinking and urinating much less. I look forward to trying the next release, the cardiac bypass kit.