Rodrigues, S.C.S., N.A.S. Rocha, and M.S. Lima, et al. 2011. “Factor Analysis of Sarcoidosis Phenotypes at Two Referral Centers in Brazil”.
Sarcoidosis, Vasculitis and Diffuse Lung Diseases 28 (1): 34-43.
https://mattioli1885journals.com/index.php/sarcoidosis/article/view/2619.