Shifts to and from daylight saving time and incidence of myocardial infarction.

  title={Shifts to and from daylight saving time and incidence of myocardial infarction.},
  author={Imre Janszky and Rickard Ljung},
  journal={The New England journal of medicine},
  volume={359 18},
The incidence of acute myocardial infarction was significantly increased for the first 3 weekdays after the transition to daylight saving time in the spring. In contrast, in the autumn, only the first weekday was affected significantly. 
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