Arshad, S., Rizvi, S. H. A., Qureshi, M. F., Hanif, M., Iftikhar, I., Ayoub, M., & Kumar, S. (2019). Effectiveness of laughter therapy in cognitive skills improvements. International Journal of Endorsing Health Science Research (IJEHSR), 7(1), 55-60. https://doi.org/10.29052/IJEHSR.v7.i1.2019.55-60