Humagain, M., Thapa, S., Lamichhane, S., Rijal, A. H., Neupane, M., & Koirala, P. (2023). Association between Subjective Happiness and Periodontal Disease in Patients Visiting at a Tertiary Care Centre of Central Nepal. Journal of Nepalese Society of Periodontology and Oral Implantology, 7(1), 3–7. https://doi.org/10.3126/jnspoi.v7i1.60881