1. Department of Emergency Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan.
2. Department of Emergency Medicine, National Taiwan University Hospital, Taipei, Taiwan.
3. Mathematics Division, National Center for Theoretical Sciences, National Taiwan University, Taipei, Taiwan.
4. Department of Medical Imaging, National Taiwan University Hospital, Taipei, Taiwan.
5. NVIDIA Corporation, Bethesda, CA.
6. Institute of Applied Mathematical Sciences, National Taiwan University, Taipei, Taiwan.