Sorry, that one is truly beyond me, I am not good with blood and insides and things. My advice to anyone and everyone writing Wikipedia is to stick to a subject you undertstand. In an effort of collaboration. I did try to read it through, but when I came to this picture File:Esophageal varices - wale.jpg - I felt a little unwell myself. However, it is clearly very well written and informative and I think it is fantastic that someone with such a grasp of the subject, takes the time to write at Wikipedia - one page like that is worth a billions of some of the others. Congratulations and good luck, I'm sure it is FA standard already.