Purnomo, Y. Y., E. Sjamsudin, and E. M. Oli’i. “Characteristics of Pain Based on Numerical Rating Scale in Maxillofacial Trauma Patients Treated With Open Reduction Internal Fixation”. Nusantara Medical Science Journal, vol. 6, no. 1, Oct. 2021, pp. 44-53, doi:10.20956/nmsj.v6i1.13855.