Bhurtel, R., U. Yadav, R. Chaudhary, S. Shah, P. Poudel, R. P. Pokhrel, and S. Sharma. “Effect of Breastfeeding on Relieving Pain During Immunization in Infant”. Kathmandu University Medical Journal, vol. 18, no. 4, Dec. 2020, pp. 376-80, doi:10.3126/kumj.v18i4.49249.