Journal of clinical oncology, 31(34), 4283-4289. American Society of Clinical Oncology Journal of Clinical Oncology, 31(34), 4283-4289. American Society of Clinical Oncology Journal of Clinical Oncology, 31, 4283-9 Journal of Clinical Oncology, 31, 34, pp. 4283-9 Journal of Clinical Oncology, 31(34), 4283-4289