1. Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD;
2. Department of Internal Medicine, Chang Gung Memorial Hospital, Taipei, Taiwan;
3. Department of Oncology, Sidney Kimmel Comprehensive Cancer Center,
4. Department of Oncology Biostatistics, and
5. Division of Pulmonary and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, MD; and
6. Department of Medicine, University of Virginia, Charlottesville, VA