Lee J, Nam E, Jo Y, Kim J, Moon J, Choi J, Lee J, Kim Y, Kim Y.  Association between Diabetes Mellitus, Hypertension and Private Insurance of Korean: The 6th Korea National Health and Nutrition Examination Surveys 2013-2015.  KJFP 2017;7:922-925.  https://doi.org/10.21215/kjfp.2017.7.6.922