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We read with interest the article by Fiorella et al1 on interobserver variability in the assessment of aneurysm occlusion with the WEB aneurysm embolisation system recently published in the journal. In this study the authors evaluated the interobserver variability of the previously published Web Occlusion Scale (WOS).2 They showed substantial overall interobserver agreement and proposed that the WOS should be used as a primary angiographic endpoint in future clinical studies.
We have just completed a retrospective multicenter study addressing the safety of the use of single layer WEBs in 98 aneurysms.3 In this study we …
Contributors All authors contributed to the redaction of this comment over a previously published article.
Competing interests None declared.
Patient consent Obtained.
Provenance and peer review Not commissioned; internally peer reviewed.