Here is a classic example of what not to do. Even though this widow has a law dog, the approach is all wrong. You can submit evidence until the dump truck breaks down from the excessive load to the front door of 810 Vermont Ave. NW and it will get you no  closer to SC. You can submit like cases of BVA and Single Judge decisions from the CAVC and the same will ensue. Absent a true and  coherent nexus letter , your efforts will not avail you. Here, the widow is doubly disenfranchised as her husband, a combat Veteran, cannot speak from the grave to describe the blood exposure he undoubtedly experienced.

Take this to the bank when filing your claim regardless the circumstances. Amassing large quantities of articles about HCV clinics in India and contamination of jetguns  in a Pakistani weight loss clinic in 1998 will not get you there.

http://www.va.gov/vetapp11/Files4/1132480.txt