- DeFrancisco, S.; DeAndrés, S.; Torres, C.
- Effectiveness of Integrative Laughter Therapy to Reduce Anxiety, Improve Self-Esteem and Increase Happiness: A Naturalistic Study at a Day Hospital for Addictive Disorders
- International Journal of Environmental Research and Public Health, 2019, Vol. 16, 4194
- English (Australia, Canada, UK, USA)
Eligible for inclusion in findings archive
- No, no valid measure of happiness used.