“Common Chitotriosidase Duplication Gene Polymorphism and Clinical Outcome Status in Sarcoidosis”. Sarcoidosis, Vasculitis and Diffuse Lung Diseases, vol. 32, no. 3, Sept. 2015, pp. 194-9, https://www.mattioli1885journals.com/index.php/sarcoidosis/article/view/3733.