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0WCH Retroperitoneum
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0WCH0 Open
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0WCH0Z No Device
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0WCH0ZZExtirpation of Matter from Retroperitoneum, Open Approach
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0WCH3 Percutaneous
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0WCH3Z No Device
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0WCH3ZZExtirpation of Matter from Retroperitoneum, Percutaneous Approach
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0WCH4 Percutaneous Endoscopic
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0WCH4Z No Device
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0WCH4ZZExtirpation of Matter from Retroperitoneum, Percutaneous Endoscopic Approach
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0WCH7 Via Natural or Artificial Opening
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0WCH7Z No Device
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0WCH8 Via Natural or Artificial Opening Endoscopic
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0WCH8Z No Device
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0WCHX External
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0WCHXZ No Device
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0WCHXZZExtirpation of Matter from Retroperitoneum, External Approach
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