Kasenda, R. and Jael, S. A. (2016) “Effects of Laughter on Quality and Hours of Sleep and Blood Pressure among Elderly in Indonesia”, Journal of International Scholars Conference - ALLIED HEALTH, 1(5), pp. 62-70. Available at: https://jurnal.unai.edu/index.php/jiscah/article/view/385 (Accessed: 8May2021).