Kuse, Naoyuki, et al. “Long-Term Efficacy of Macrolide Treatment in Idiopathic Pulmonary Fibrosis: A Retrospective Analysis”. Sarcoidosis, Vasculitis and Diffuse Lung Diseases, vol. 33, no. 3, Oct. 2016, pp. 242-6, https://mattioli1885journals.com/index.php/sarcoidosis/article/view/4108.