The Longitudinal Trend of Cardiac Surgery in Korea from 2003 to 2013.

Background: The purpose of this study was to investigate longitudinal changes of the utilization of operational and surgical medical care inside and outside a metropolitan area over 10 years, analyzing the residential areas of patients and the locations of medical facilities for major cardiovascular surgery.

Methods: Data analysis was conducted by classifying the addresses of patients and the locations of medical care facilities of metropolitan cities and provinces, using data from the National Health Insurance Corporation from January 2003 to December 2013.

Results: There is serious concentration of major heart surgery to medical facilities in Seoul; this problem has not improved over time.

Relationship between bone mineral density, its associated physiological factors, and tooth loss in postmenopausal Korean women.

Background: Previous studies have proposed a relationship between bone mineral density (BMD) and oral health. However, the relationship between BMD and tooth loss in female individuals is not yet well understood. Therefore, the aim of this study was to assess the association between BMD, including its related physiological factors, and tooth loss among postmenopausal women in Korea.