1. Department of Medical Surgical Nursing , Universitas Gadjah Mada , Yogyakarta , Indonesia
2. The Sleman Health and Demographic Surveillance System , Universitas Gadjah Mada , Yogyakarta , Indonesia
3. School of Nursing, College of Nursing , Taipei Medical University , Taipei , Taiwan, China
4. School of Nursing , Universitas Gadjah Mada , Yogyakarta , Indonesia