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What is The lead of ECG marked as X is called? and explain in detail?
And. B. V4R15 - Lead ECGV4R - 5th intercostal space midclavicular line (same as V4 but on the other side)V8 - On the back, 5th intercostal space midscapular line.V9 - On the Back, 5th intercostal space between V8 and the spine