1. Department of Critical Care and Disaster Nursing, Japanese Red Cross Kyushu International College of Nursing, Munakata 811-4157, Fukuoka, Japan
2. Department of Critical Care Medicine, Yokohama City University Hospital, 3-9 Fukuura, Kanazawa-ku, Yokohama 236-0004, Kanagawa, Japan
3. Department of Emergency and Critical Care Medicine, Hitachi General Hospital, 2-1-1 Jonancho, Hitachi 317-0077, Ibaraki, Japan
4. Department of Adult Health Nursing, College of Nursing, Ibaraki Christian University, Hitachi 319-1295, Ibaraki, Japan
5. Department of Physical Therapy, Faculty of Rehabilitation, Gifu University of Health Science, 2-92 Higashiuzura, Gifu 500-8281, Gifu, Japan
6. Critical Care Research Group, The Prince Charles Hospital, 627 Rode Rd, Chermside, QLD 4032, Australia
7. Faculty of Medicine, The University of Queensland, 20 Weightman St, Herston, QLD 4006, Australia
8. Non-Profit Organization ICU Collaboration Network (ICON), 2-15-13 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
9. Department of Emergency and Intensive Care Medicine, National Hospital Organization Nagoya Medical Center, Nagoya 460-0001, Aichi, Japan
10. Japanese Society for Early Mobilization, 1-2-12 Kudankita, Chiyoda-ku, Tokyo 102-0073, Japan
11. Department of Intensive Care Medicine, School of Medicine, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8666, Japan