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Contributors TV was invited to write the commentary, and wrote the first and final draft. RS read the paper to be commented and provided essential knowledge, in particular regarding clinical implications, participated in the interpretation of the results, and finalising the manuscript. SL reviewed the statistical methods and participated in the interpretation of the results, and in drafting the manuscript. All authors approved the final version.
Competing interests None declared.
Patient consent Not required.
Provenance and peer review Commissioned; internally peer reviewed.