1. Graduate School of Health Management, Keio University, Shinjuku, Japan
2. Department of Biobehavioral Nursing and Health Informatics, School of Nursing, University of Washington, Seattle, WA, USA
3. Department of Pediatrics, School of Medicine, University of Washington, Seattle, WA, USA
4. Center for Child Health, Behavior and Development, Seattle Children’s Research Institute, Seattle, WA, USA
5. Department of Anesthesiology and Pain Medicine, School of Medicine, University of Washington, Seattle, WA, USA