Assertion: situ fenestration | /r/HasProperty | employed for arch arteries
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text: In situ fenestrations were employed for the arch arteries and were reported in both experimental and clinical works.21, 22 Different fenestration techniques were reported: radiofrequency probes,15 the use of needles or sharp guide wire,13, 14, 23 in situ retrograde fenestration,24 and laser.25 All the techniques demonstrated advantages and disadvantages.