ROSAI, J. Histological typing of tumors of the thymus. World Health Organization, International Histological Classification of Tumors. 1999, 1-65
OKUMURA, M. The World Health Organization histologic classification system reflects the oncologic behavior of thymoma. Cancer. 2002, 94, 624-632
KONDO, K. WHO histologic classification is a prognostic indicator in thymoma. Ann Thorac Surg. 2004, 77, 1183-1188
CHALABREYSSE, L. Correlation of the WHO schema for the classification of thymic epithelial neoplasms with prognosis. Am J Surg Pathol. 2002, 26, 1605-1611