1. Lecturer, Department of Oral Medicine and Periodontology, Faculty of Dentistry, Fayoum University, Fayoum, Egypt
2. Associate Professor, Department of Oral Medicine and Periodontology, Faculty of Dentistry, Cairo University, Cairo, Egypt
3. Lecturer, Department of Medical Parasitology, Faculty of Medicine, Fayoum University, Fayoum, Egypt
4. Assistant Lecturer, Department of Medical Parasitology, Faculty of Medicine, Fayoum University, Fayoum, Egypt
5. Professor, Department of Medical Parasitology, Faculty of Medicine, Cairo University, Cairo, Egypt/ Professor, Department of Medical Parasitology, Armed Forces College of Medicine, Cairo, Egypt