Correction to: Orphanet J Rare Dis (2021) 16:295 https://doi.org/10.1186/s13023-021-01927-w

Following the publication of the original article [1], the authors requested to move the declaration “SBW has the ERAPERMED2019-310 grant—Personalized Mitochondrial Medicine: Optimizing diagnostics and treatment for patients with mitochondrial diseases” from the ‘Competing interests’ section to the ‘Funding’ section of the article.

The ‘Funding’ section now states: “SBW has the ERAPERMED2019-310 grant—Personalized Mitochondrial Medicine: Optimizing diagnostics and treatment for patients with mitochondrial diseases”.

The ‘Competing interests’ section now states: “The authors declare that they have no competing interests”.

The ‘Funding’ and ‘Competing interests’ sections have already been updated in the original article.