1. Elisabeth Schröder-Butterfill is the corresponding author () Department of Gerontology, University of Southampton, UK.
2. Nathan Porath is affiliated with the Department of Gerontology, University of Southampton, UK.
3. Yvonne S. Handajani is affiliated with the School of Medicine and Health Science at the Atma Jaya Catholic University of Indonesia, Jakarta, Indonesia.
4. Ciptaningrat Larastiti is an independent researcher from Sleman District, Yogyakarta, Indonesia.
5. Benidiktus Delpada is also an independent researcher from Propinsi Nusa Tenggara Timur, Indonesia.
6. Eef Hogervorst is affiliated with NCSEM, Loughborough University, Loughborough, UK.
7. Hezti Insriani is an independent researcher from Condongcatur, Yogyakarta, Indonesia.
8. Jelly is also an independent researcher from Padang, West Sumatra, Indonesia.
9. Philip Kreager is affiliated with Somerville College, Oxford, UK.
10. Dyah Rahayuningtyas is an independent researcher from Sleman, Yogyakarta, Indonesia.
11. Yuniferti Sare is also an independent researcher from Jakarta Barat, Indonesia.
12. Tresno is also an independent researcher from Lahat District, Sumatra Selatan, Indonesia.