1 Division of Medical Oncology, Department of Internal Medicine, University of Kentucky, Lexington.
2 Neuroendocrine and Gynecologic Cancer Therapeutics, Cancer Therapy Evaluation Program, National Cancer Institute, National Institutes of Health, Bethesda, Maryland.
3 Medical Oncology and Clinical Endocrinology, Center for Cancer Research Rare Tumor Clinic, National Cancer Institute, National Institutes of Health, Bethesda, Maryland.