About the Authors

Takao Ishii

Contributed equally to this work with: Takao Ishii, Eri Hashimoto

Affiliation Department of Neuropsychiatry, School of Medicine, Sapporo Medical University, Sapporo, Japan.

Eri Hashimoto

Contributed equally to this work with: Takao Ishii, Eri Hashimoto

Affiliation Department of Neuropsychiatry, School of Medicine, Sapporo Medical University, Sapporo, Japan.

Wataru Ukai

ukai@sapmed.ac.jp

Affiliation Department of Neuropsychiatry, School of Medicine, Sapporo Medical University, Sapporo, Japan.

Yohei Kakutani

Affiliation Department of Neuropsychiatry, School of Medicine, Sapporo Medical University, Sapporo, Japan.

Ryuji Sasaki

Affiliation Department of Neuropsychiatry, School of Medicine, Sapporo Medical University, Sapporo, Japan.

Toshikazu Saito

Affiliation Department of Neuropsychiatry, School of Medicine, Sapporo Medical University, Sapporo, Japan.

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: TI EH TS. Performed the experiments: TI YK. Analyzed the data: TI WU. Contributed reagents/materials/analysis tools: RS. Wrote the paper: TI WU.