1. Liaison Psychiatry and Psycho‐Oncology Unit, Department of Psychiatry and Behavioural Sciences, Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University Tokyo Japan
2. Wako Hospital Saitama Japan
3. Onda‐Daini Hospital Chiba Japan
4. International Institute for Integrative Sleep Medicine (WPI‐IIIS) University of Tsukuba Ibaraki Japan
5. Department of Health Policy National Centre for Child Health and Development Tokyo Japan
6. Tazaki Hospital Okinawa Japan
7. Narimasu Kosei Hospital Tokyo Japan
8. Department of Psychiatry Tokyo Kyosai Hospital Tokyo Japan
9. Graduate School of Health Care Science Bunkyo Gakuin University Tokyo Japan
10. Department of Psychiatry and Behavioural Sciences, Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University Tokyo Japan