R. K. Singh, A. K. Simalti, and D. Singh, “Breast Feeding as Analgesia in Neonates: A Randomized Controlled Trial”, J. Nepal Paedtr. Soc., vol. 36, no. 3, pp. 238–242, Apr. 2017, doi: 10.3126/jnps.v36i3.15688.