Murase, Chiaki, et al. “Epstein-Barr Virus-Associated Natural Killer T-Cell Lymphoma in a Patient Receiving Therapy With Anti-Tumour Necrosis Factor and Thiopurine”. Acta Dermato-Venereologica, vol. 97, no. 2, Sept. 2016, pp. 273-4, doi:10.2340/00015555-2529.