Choi, M.-K., N.-Y. Kim, Y.-K. Lee, Y.-R. Heo, T. Hyun, S.-Y. Oh, H. Park, H.-K. Ro, and E.-S. Lyu. “Contribution of Food Groups to Sodium and Potassium Intakes by Their Ratio in Korean Adults”. Progress in Nutrition, Vol. 21, no. 2, June 2019, pp. 285-93, doi:10.23751/pn.v21i2.6888.