1. Centers for Disease Control and Prevention [Internet]. Hip fractures among older adults. U.S. Department of Health and Human Services, 2016 [cited 2018 Nov 28]. Available from: https://www.cdc.gov/homeandrecreationalsafety/falls/adulthipfx.html.
2. Majority of hip fractures occur as a result of a fall and impact on the greater trochanter of the femur: a prospective controlled hip fracture study with 206 consecutive patients;Parkkari;Calcif Tissue Int,1999
3. Falls and fall-related injuries among community-dwelling adults in the United States;Verma;PLoS ONE,2016
4. 2017 National survey of older koreans – Findings and implications;Chung,2018
5. KOSIS: Korea Statistical Information Service [Internet]. Cause of death/Sex/Number of death by age, morality rate, 2018 [cited 2018 Nov 28]. Daejeon: Statistics Korea. Available from: http://kosis.kr/statHtml/statHtml.do?orgId=101&tblId=DT_1B34E01&vw_cd=MT_ZTITLE&list_id=D11&seqNo=&lang_mode=ko&language=kor&obj_var_id=&itm_id=&conn_path=MT_ZTITLE.