1. Division of Infectious Diseases, Department of Medicine, Albuquerque Veterans Affairs Medical Center,1 and
2. Division of Infectious Diseases, Department of Medicine, West Los Angeles Veterans Affairs Medical Center, UCLA School of Medicine, Los Angeles, California 900732
3. Division of Hematology Oncology, Department of Medicine,3 The University of New Mexico School of Medicine, Albuquerque, New Mexico 87108, and