Nagai Kei
- Academic societies
2006-10 -- (current) THE JANPANESE SOCIETY OF INTERNAL MEDICINE 2010 -- 2018 JAPANESE SOCIETY FOR IMMUNOLOGY 2014 -- 2016 日本アフェレシス学会 2010 -- 2016 JAPAN COLLEGE OF RHEUMATOLOGY 2014 -- 2018 日本高血圧学会
| 2006-10 -- (current) | THE JANPANESE SOCIETY OF INTERNAL MEDICINE |
| 2010 -- 2018 | JAPANESE SOCIETY FOR IMMUNOLOGY |
| 2014 -- 2016 | 日本アフェレシス学会 |
| 2010 -- 2016 | JAPAN COLLEGE OF RHEUMATOLOGY |
| 2014 -- 2018 | 日本高血圧学会 |