de Kleijn, W., Elfferich, M. and De Vries, et al., J. (2009) “Fatigue in sarcoidosis: American versus Dutch patients”,
Sarcoidosis, Vasculitis and Diffuse Lung Diseases, 26(2), pp. 92–97. Available at:
https://mattioli1885journals.com/index.php/sarcoidosis/article/view/2595 (Accessed: 24 February 2025).