Liu L, Perry AM, Cao W, Smith LM, Hsi ED, Liu X, Mo JQ, Dotlic S, Mosunjac M, Talmon G, Weisenburger DD, Fu K. Relationship between Rosai-Dorfman disease and IgG4-related disease: study of 32 cases. Am J Clin Pathol. 2013 Sep; 140(3):395-402.