1. Department of Microbiology, Immunology & Pathology, Des Moines University, Des Moines, IA 50312, USA
2. The Department of Respiratory Medicine, The Second People’s Hospital of Hefei and Hefei Hospital Affiliated to Anhui Medical University, Hefei 230002, China
3. Department of Surgery, University of Missouri School of Medicine, Columbia, MO 65212, USA
4. Ellis Fischel Cancer Center, University of Missouri, Columbia, MO 65212, USA