Answer - Case of the month (Dec 2011): Revision history

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12 December 2011

  • curprev 10:0510:05, 12 December 2011Secretariat talk contribs 438 bytes +438 Created page with "800px '''Q: After the first two complexes the QRS complex changes. What could explain this?''' <div style="padding-left:24px"> A. Axis rotation due to left..."