FALKSON, C. I. Prognostic factors in metastatic malignant melanoma. An analysis of 236 patients treated on clinical research studies at the Department of Medical Oncology, University of Pretoria, South Africa from 1972-1992. Oncology. 1998, 55, 59-64
MANOLA, J. Prognostic factors in metastatic melanoma : a pooled analysis of Eastern Cooperative Oncology Group trials. J. Clin. Oncol. 2000, 18, 3782-3793