1. Department of Public Health Nursing, Mie University Graduate School of Medicine, Tsu, Mie, Japan
2. Graduate School of Nursing Science, St Luke's International University, Tokyo, Japan
3. Indramayu College of Health Science, Indramayu, West Java, Indonesia
4. Syarif Hidayatullah State Islamic University Jakarta, Tangerang Selatan, Banten, Indonesia
5. Institute for Health & Aging and Department of Social and Behavioral Sciences, University of California San Francisco, San Francisco, CA, USA