Willich, S N Circadian variation in the incidence of sudden cardiac death in the Framingham Heart Study population. [electronic resource] - The American journal of cardiology Oct 1987 - 801-6 p. digital Publication Type: Journal Article ISSN: 0002-9149 Standard No.: 10.1016/0002-9149(87)91027-7 doi Subjects--Topical Terms: AdultCircadian RhythmDeath, Sudden--etiologyHumansLongitudinal StudiesMiddle AgedMyocardial Infarction--mortalityProspective Studies