Berek, P.A.L., Doctoral Program of Nursing, Faculty of Nursing, Universitas Indonesia, Indonesia, Nursing Program at Universitas Timor, Atambua Campus, East Nusa Tenggara, Atambua, Indonesia; Siswanto, B.B., Department of Cardiology and Cardiovascular, Faculty of Medicine, Universitas Indonesia, Indonesia, National Cardiovascular Center - Harapan Kita Hospital, Jakarta, Indonesia; Irawati, D., Departmen of Medical-Surgical Nursing, Faculty of Nursing, Universitas Indonesia, Indonesia; Jatmiko, W., Faculty of Computer Science, Universitas Indonesia, Indonesia