About the Authors

Nagako Kudo

Contributed equally to this work with: Nagako Kudo, Hirohide Yokokawa

Affiliations Department of General Medicine, Juntendo University School of Medicine, Tokyo, Japan, Tokorozawa Medical Clinic, Tokorozawa City, Saitama, Japan

Hirohide Yokokawa

Contributed equally to this work with: Nagako Kudo, Hirohide Yokokawa

hyokoka@juntendo.ac.jp

Affiliation Department of General Medicine, Juntendo University School of Medicine, Tokyo, Japan

Hiroshi Fukuda

Affiliation Department of General Medicine, Juntendo University School of Medicine, Tokyo, Japan

Hironobu Sanada

Affiliations Division of Health Science Research, Fukushima Welfare Federation of Agricultural Cooperatives, Aizubange Town, Fukushima, Japan, Department of Tumor and Host Bioscience, Fukushima Medical University School of Medicine, Fukushima, Japan

Yuichi Miwa

Affiliation Department of Health Screening, Tokyo Health Service Association, Tokyo, Japan

Teruhiko Hisaoka

Affiliation Department of General Medicine, Juntendo University School of Medicine, Tokyo, Japan

Hiroshi Isonuma

Affiliation Department of General Medicine, Juntendo University School of Medicine, Tokyo, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: NK HY HF HS YM TH HI. Performed the experiments: NK HY YM. Analyzed the data: HY. Contributed reagents/materials/analysis tools: NK HY HF HS YM TH HI. Wrote the paper: NK HY.