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Literatura:
Barkmann C.
et al.;
Clowning as a supportive measure in paediatrics – a survey of clowns, parents and nursing staff;
BMC Pediatr. 2013 Oct 10;13:166.;
Chang C.
e al.;
Psychological, immunological and physiological effects of a Laughing Qigong Program (LQP) on adolescents.;
Complement Ther Med. 2013 Dec;21(6):660-8.
Fariba Ghodsbin
et al.;
The Effects of Laughter Therapy on General Health of Elderly People Referring to Jahandidegan Community Center in Shiraz, Iran, 2014: A Randomized Controlled Trial;
S. H. Kim
et al.;
Laughter and Stress Relief in Cancer Patients: A Pilot Study;
Evid Based Complement Alternat Med. 2015; 2015:
Shadi Farifteh
et al.;
The Impact of Laughter Yoga on the Stress of Cancer Patients before Chemotherapy;
Iran J Cancer Prev. 2014 Autumn; 7(4): 179–183.