1. Department
of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, United States
2. Department
of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409, United States
3. Department
of Mathematics and Statistics, Georgetown University, Washington, DC 20057, United States
4. Department
of Tropical Medicine and Infectious Diseases, Tanta University, Tanta 31111, Egypt
5. MedStar Georgetown University Hospital and Georgetown University Medical Center, Washington, DC 20057, United States