Muangman, N. ., P. . Suttinont, and N. . Chierakul. “Pulmonary Sarcoidosis: Classic Radiographic Finding”. Siriraj Medical Journal, vol. 60, no. 1, Jan. 2008, pp. 28-30, https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/246306.