- *1 - Courtesy of Assistant Professor Atsushi Kaida, Oral Radiation Oncology Department, Tokyo Medical and Dental University 
- *2 - Courtesy of Professor Tasuku Nishihara, Department of Anesthesia and Perioperative Medicine, Ehime University Graduate School of Medicine. 
- *3 - Courtesy of Department of Life Science and Biotechnology, National Institute of Advanced Industrial Science and Technology Masakazu Namihira, Research Group Leader, Biomedical Research Institute. 
- *4 - Courtesy of Postdoctoral Research Scholar Tomomitsu Iida, Leonard Davis School of Gerontology, University of Southern California When published:Department of Pharmacology, Tohoku University Graduate School of Medicine. 
- *5 - Courtesy of Professor Shigeki Higashiyama, Department of Biochemistry and Molecular Genetics, Ehime University Graduate School of Medicine.