Marcoval, J. and Mañá, J. (2016) “Papular sarcoidosis of the knees. A frequent form of presentation of systemic sarcoidosis”, Sarcoidosis, Vasculitis and Diffuse Lung Disease, 33(1), pp. 59–65. Available at: https://mattioli1885journals.com/index.php/sarcoidosis/article/view/4256 (Accessed: 27 June 2022).