Lim, Sian Yik, and Deepa Panikkath. “Intrathoracic Manifestations of IgG4-Related Disease”. The Southwest Respiratory and Critical Care Chronicles 4, no. 16 (October 12, 2016): 33-39. Accessed October 23, 2020. https://pulmonarychronicles.com/index.php/pulmonarychronicles/article/view/324.