- Shahidi, M.; Modabbernia, A.; Mojtahed, A.
- Laughter Yoga versus Group Exercise Program in Elderly Depressed Women: A Randomized Controlled Trial.
- International Journal of Geriatric Pscychiatry, 2011, Vol 26, 322 - 327
Eligible for inclusion in findings archive
- No, no valid measure of happiness used.