1. Basic Nursing Department , School of Nursing, Faculty of Medicine , Universitas Brawijaya , Malang 65145 , Indonesia
2. Biology Department , Faculty of Mathematics and Natural Sciences , Universitas Brawijaya , Malang 65145 , Indonesia
3. Department of Cardiology and Vascular Medicine , Faculty of Medicine , Universitas Brawijaya – Saiful Anwar General Hospital , Malang 65145 , Indonesia
4. Medical Surgical Nursing Department , School of Nursing, Faculty of Medicine , Universitas Brawijaya , Malang 65145 , Indonesia