Gerke, A.K., et al. “An Analysis of Seasonality of Sarcoidosis in the United States Veteran Population: 2000-2007”. Sarcoidosis, Vasculitis and Diffuse Lung Diseases, vol. 29, no. 2, Dec. 2012, pp. 155-8, https://mattioli1885journals.com/index.php/sarcoidosis/article/view/2512.