Changes

|colspan="2" style="font-size: 80%;"|These Rhythm Puzzles have been published in the [http://www.pubmedcentral.nih.gov/tocrender.fcgi?action=archive&journal=384 Netherlands Heart Journal] and are reproduced here under the prevailing creative commons license with permission from the publisher, Bohn Stafleu Van Loghum. ||

|colspan="2" style="font-size: 80%;"|These Rhythm Puzzles have been published in the [http://www.pubmedcentral.nih.gov/tocrender.fcgi?action=archive&journal=384 Netherlands Heart Journal] and are reproduced here under the prevailing creative commons license with permission from the publisher, Bohn Stafleu Van Loghum. ||

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|colspan="2" style="font-size: 100%;"|The ECG can be enlarged twice by clicking on the image and it's first enlargement

|colspan="2" style="font-size: 80%;"|'''The ECG can be enlarged twice by clicking on the image and it's first enlargement'''

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