Thank you; yes, he had a clinical history of colitis and other stomach issues, and had visited the ER due to abdominal pain over a weekend. On Tuesday he collapsed at home and was gone. I don't know what transpired with the doctor (and didn't want to pry too much with the grieving family) but it sounds like it was just missed or his symptoms misunderstood. I heard grumblings that the doctor was at fault but I don't fault them - things just happen and while it is sad, it just happens.