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Footnotes
Contributors JH wrote the last version of the article, after updating the more recent data. PC and TLD have conducted the statistical analysis. MC has completed his surgical thesis in 2016 on the first 14 patients of this series and wrote the first version of the complete article. TM and SB have regularly collected intermediate data. OA has checked the translation. P-HS has coordinated the study and submitted and revised this Letter.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests None declared.
Provenance and peer review Not commissioned; externally peer reviewed.