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160 bytes added ,  20:17, 17 February 2012
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[[File:E0003153.jpg|thumb|600px|left|.]]
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[[File:E0003153.jpg|thumb|600px|left|This is a tracing from the pacemaker clinic with the pacer set slightly below the threshold for capture. A magnet is over the pacemaker. (recorded 23 Sept 1998).]]

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