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(A) Stent 3 has heavy encrustation along its length; (B) encrustation as observed by scanning electron microscopy; (C) energy-dispersive analysis by x-ray shows calcium oxalate.
(A) Stent 3 has heavy encrustation along its length; (B) encrustation as observed by scanning electron microscopy; (C) energy-dispersive analysis by x-ray shows calcium oxalate.
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