Burgdorff, T., Douwes, K., Bogenrieder, T., Szeimies, R.-M., Hohenleutner, U., Landthaler, M., & Stolz, W. (2001). Superior vena cava syndrome: an important differential diagnosis in patients with facial edema. Acta Dermato-Venereologica, 81(3), 205–206. https://doi.org/10.1080/000155501750376320