@misc{oai:niigata-u.repo.nii.ac.jp:00006003,
 author = {Koga, Hiroshi},
 month = {Mar},
 note = {学位の種類: 博士（医学）. 報告番号: 甲第4405号. 学位記番号: 新大院博（医）甲第804号. 学位授与年月日: 平成30年3月23日, 新大院博（医）甲第804号},
 title = {Increasing incidence of fracture and its sex difference in school children : 20 year longitudinal study based on school health statistic in Japan},
 year = {2018}
}