Authors and Disclosures Ane Rogne1 and Bjørnar Hassel1,2* 1Department of Neurohabilitation, Oslo University Hospital, Kirkeveien 166, 0450 Oslo, Norway. 2Institute of Clinical Medicine, University of Oslo, Oslo, Norway. *Correspondence bjornar.hassel@medisin.uio.no Author contributions AR was responsible for CPT3 testing; BH was responsible for neurological examination, testosterone treatment, and medical follow-up. AR and BH wrote the manuscript. Both authors read and approved the final manuscript.