Text and Data Mining valid from 2019-02-04
First Online: 4 February 2019
Compliance with Ethical Standards
: No sources of funding were used to conduct this study or prepare this manuscript.
: Dr. Landfeldt, Ms. Edström, Dr. Jimenez-Moreno, Dr. van Engelen, Dr. Kirschner, and Dr. Lochmüller have no conflicts of interest that are directly relevant to the content of this article.
: All data generated or analysed during this study are included in the published article.