My wife and I have been discussing your posts and how well your son has done on the pump. I would like to ask you some questions. I have looked at the diabetic pumps on line, which pump is it that he uses. How often does he have to change the tubing for it. Is the hydrocortisone stable? Do you physically have to put in the doses each day or does the pump automatically change the times and doses? We are very interested in this method. Thank you David R