1. Department of Pathology, Wilford Hall Medical Center, Lackland Air Force Base, San Antonio, TX 78236, USA
2. Pathology Program, San Antonio Uniformed Services Health Education Consortium, San Antonio, TX 78236, USA
3. Department of Internal Medicine, Wilford Hall Medical Center, Lackland Air Force Base, TX 78236, USA
4. Department of Hematology/Oncology, Wilford Hall Medical Center, Lackland Air Force Base, San Antonio, TX 78236, USA
5. Department of Pathology, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA