Kernrechtsfrage
Whether the deceased insured person's waiting period for a disability pension began before 1 January 2011, as claimed, or only in 2009/2011.
Extrahierter Entscheid
The record did not show an earlier medically reliable work incapacity; the waiting period could not be placed before October 2008, so the pension could begin no earlier than January 2011.
Extrahierte Begründung
The court accepted that the existing medical files were sufficient; no further evidence or expert report was required. For chronic liver cirrhosis with esophageal varices, no general medical rule allowed a reliable retrospective inference of work incapacity solely from disease stage or first bleeding events.