1. 1) Life Safety Education Section, Disaster Preparedness Division, Tokyo Fire Department : Actual Condition of Accidents in Daily Life Concerned by Ambulance Dispatch Data, pp. 96, 2016 (in Japanese) 東京消防庁防災部防災安全課：救急搬送データから見る日常生活事故の実態 平成28年, pp. 96, 2016
2. 2) Ministry of Health, Labour and Welfare : Result of statistis on the movement of Japanese Population in 2016, pp. 20, 2017.9 (in Japanese) 厚生労働省：平成28年人口動態統計（確定数）の概況, pp. 20, 2017.9
3. 3) Ministry of Health, Labour and Welfare : Result of statistis on the movement of Japanese Population, 2017.9 (in Japanese) 厚生労働省：平成28年人口動態調査 / 人口動態統計 確定数 保管統計表（報告書非掲載表）死因, 2017.9
4. 4) Shujirou Imaeda, Bokyung Son, Emiko Uchiyama, Tomoki Tanaka, Sakiko Taniguchi, Unyaporn Suthutvoravut, Yusuke Miyoshi, Akiko Nishino, Toshiaki Tanaka, Katsuya Iijima, Sakae Tanaka, Takehiro Matsubara, Kazuhiko Nishide, Toshio Otsuki : To Clarify Exact Fall Situations and Architectural Fall Prevention for Community-Dwelling Elderly Who Experienced Falls and Fractures, Proceedings of the Housing Studies Symposium 2018, Vol. 13, pp. 65-70, 2018.12 (in Japanese) 今枝秀二郞, 孫輔卿, 内山瑛美子, 田中友規, 谷口紗貴子, Suthutvoravut Unyaporn, 三好友良, 西野亜希子, 田中敏明, 飯島勝矢, 田中栄, 松原全宏, 西出和彦, 大月敏雄：在宅高齢者における転倒状況の把握と建築的な転倒予防対策 ― 東京大学医学部附属病院へ入院した大腿骨近位部骨折患者の調査 ― 住宅系研究報告会論文集, Vol. 13, pp. 65-70, 2018.12
5. 5) Satoru Kojima, Taketo Furuna, Nozomu Ikeda, Mariko Nakamura, Yuji Sawada : Investigation of Actual Condition of Falls for Community-Dwelling Poeple in Hokkaido, Journal of the Japanese Physical Therapy Association, Supplement 2006, p. 379, 2007 (in Japanese) 小島悟, 古名丈人, 池田望, 中村真理子, 澤田雄二：北海道における地域高齢者の転倒実態調査, 理学療法学 Supplement 2006, p. 379, 2007