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Key Legal Authorities

Gilbert v. Derwinski, 1 Vet. App. 49 (1990)

CaseHolding
Gilbert v. Derwinski, 1 Vet. App. 49 (1990)Benefit of the doubt — when evidence is in approximate balance, resolve in veteran's favor
Shedden v. Principi, 381 F.3d 1163 (Fed. Cir. 2004)Three-element test for direct service connection
McLendon v. Nicholson, 20 Vet. App. 79 (2006)Low threshold for when VA must provide medical examination
Nieves-Rodriguez v. Peake, 22 Vet. App. 295 (2008)Medical opinion must be based on accurate facts and sound reasoning
Caluza v. Brown, 7 Vet. App. 498 (1995)Three elements for well-grounded claim: current disability, in-service event, medical nexus
Barr v. Nicholson, 21 Vet. App. 303 (2007)VA must provide adequate examination or explain why not
Buchanan v. Nicholson, 451 F.3d 1331 (Fed. Cir. 2006)Lay evidence is competent to establish symptoms experienced
Jandreau v. Nicholson, 492 F.3d 1372 (Fed. Cir. 2007)Lay persons can provide nexus evidence for conditions observable by five senses

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