1. Department of Infectious Diseases, St. Luke’s International Hospital, Tokyo 104-8560, Japan
2. Department of Pulmonary Medicine, Thoracic Center, St. Luke’s International Hospital, Tokyo 104-8560, Japan
3. Library, Department of Academic Resources, St. Luke’s International University, Tokyo 104-0044, Japan
4. Global Health Nursing, Graduate School of Nursing Sciences, St. Luke’s International University, Tokyo 104-0044, Japan
5. Tokyo Foundation for Policy Research, Tokyo 106-0032, Japan