Harlim, A., Heri Wibowo, and Siti Aisah. “IDO Enzyme and IL-10 to TNF-α Ratios As Immune Response Silicone Granuloma: Predictors Factors”. Journal of Pakistan Association of Dermatologists, vol. 32, no. 2, June 2022, pp. 255-63, http://www.jpad.com.pk/index.php/jpad/article/view/1791.