Gupta, D., et al. “Interferon Gamma Release Assay (QuantiFERON-TB Gold in Tube) in Patients of Sarcoidosis from a Population With High Prevalence of Tuberculosis Infection”. Sarcoidosis, Vasculitis and Diffuse Lung Diseases, vol. 28, no. 2, Dec. 2011, pp. 95-101, https://mattioli1885journals.com/index.php/sarcoidosis/article/view/2539.