K. Yonekura, K. Takeda, N. Kawakami, T. Kanzaki, T. Kanekura, and A. Utsunomiya, “Therapeutic Efficacy of Etretinate on Cutaneous-type Adult T-cell Leukemia-Lymphoma”, Acta Derm Venereol, vol. 99, no. 9, pp. 774–776, Apr. 2019.