Gaus, S., M. W. Harahap, M. R. . Ahmad, A. A. A. . Husain, and N. S. Wirawan. “The Effect of Pregabalin Levels on Pain and Substance P Level Post-Cesarean Section”. Open Access Macedonian Journal of Medical Sciences, vol. 11, no. B, Jan. 2023, pp. 65-74, doi:10.3889/oamjms.2023.10569.