I proved it to the satisfaction of the Board of Veterans Appeals for myself and have supplied information to others that have used that data to prove it.
Service connection for the cause of the Veteran's death is warranted. 38 U.S.C.A. §§ 1110, 1154, 1310, 5107 (West 2002 & Supp. 2013); 38 C.F.R. §§ 3.5, 3.102, 3.303, 3.307, 3.309, 3.312 (2013).
http://www.index.va.gov/search/va/vi...s2/1418703.txt
I'll tell you sir, as I've told so many others, you give up and you'll never prove it. It is not a slam dunk and is a fight but as soon as you give up they win. It may take years.