Footnotes

• Contributors All members were involved in the discussion of her treatment.

• Funding This work was supported by the Research on Measures for Intractable Diseases Project matching fund subsidy from the Ministry of Health, Labour, and Welfare, Japan and the Japan Agency for Medical Research and Development.

• Competing interests None declared.

• Patient consent Obtained.

• Ethics approval The protocol was approved by Sapporo Medical University Hospital Institutional Review Board subject to applicable laws and regulations and ethical principles consistent with the Declaration of Helsinki.

• Provenance and peer review Not commissioned; externally peer reviewed.