Behrouz, S., S. R. Mazloom, H. Kooshiar, N. Asgharipour, N. Aghebati, and H. R. Behnam Vashani. “The Effect of Humor Therapy on Relieving Quality and Fear of Pain in Elderly Residing Nursing Homes: A Randomized Clinical Trial”. Advances in Nursing & Midwifery, vol. 28, no. 3, Oct. 2019, pp. 53-61, https://journals.sbmu.ac.ir/en-jnm/article/view/22720.