1 Department of Pharmacoepidemiology, Graduate School of Medicine and Public Health, Kyoto University, Yoshida-Konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan.
2 Department of Anesthesia, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
3 Biostatistics Section, Clinical Research Center, Chiba University Hospital, Chiba, Japan.
4 Department of Clinical Biostatistics/Clinical Biostatistics Course, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
5 Department of Pharmacoepidemiology, Graduate School of Medicine and Public Health, Kyoto University, Yoshida-Konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan. [email protected].