1. Division of Respirology, Neurology and Rheumatology, Department of Medicine, Kurume University School of Medicine , Kurume , Japan
2. Department of Neuromuscular Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry , Tokyo , Japan
3. Centre for Infectious Diseases and Microbiology, Institute of Clinical Pathology and Medical Research—New South Wales Health Pathology and Sydney Institute for Infectious Diseases, Westmead Hospital, University of Sydney , Sydney, New South Wales , Australia