- Joutsenniemi, K.; Kaattan, C.; Pankakoski, M.
- E-mail-based Exercises in Happiness, Physical Activity and Readings: A Randomized Trial on 3274 Finns
- Journal of Psychiatry, 2014, Vol. 17, 14-29
- English (Australia, Canada, UK, USA)
Eligible for inclusion in findings archive
- No, no valid measure of happiness used.