Indrianto, A. F., I. K. Samsuria, and K. D. Kurniawan. “Blood Viscosity Increases the Degree of Coronary Stenosis in Coronary Heart Disease”. Universa Medicina, vol. 34, no. 3, Dec. 2015, pp. 168-76, doi:10.18051/UnivMed.2015.v34.168-176.