Figure 2.

Time at which palpitations started. Seventy-two patients thought that arrhythmia always started at the same time of day, typically in the evening or at night. Some, however, gave more than one time-interval.

Hansson et al. BMC Cardiovascular Disorders 2004 4:13   doi:10.1186/1471-2261-4-13
Download authors' original image