1Department of Epidemiology, College of Public Health, University of Nebraska Medical Center, Omaha Nebraska, USA
2Department of Radiotherapy, Faculty of Medicine, Mansoura University, Mansoura, Egypt
3Department of Community Health and Social Medicine, School of Medicine, City University of New York, New York, USA
4The Gharbiah Cancer Society, Tanta, Egypt
5Department of Biostatistics, College of Public Health, University of Nebraska Medical Center, Omaha, Nebraska, USA
6Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha Nebraska, USA
7Department of Environmental, Occupational, Geospatial Health Sciences, Graduate School of Public Health and Health Policy, City University of New York, New York, USA
8Department of Advanced Science Research Center, City University of New York, New York, USA