1. Assistant Lecturer of Physical Therapy for Surgery, School of Physical Therapy, Badr University in Cairo, Egypt.
2. Professor and Dean of Faculty of Physical Therapy, 6 October University, Egypt
3. Professor and Chair of Physical Therapy Department, School of Health Science,Winston Salem State University, United States of America
4. Assistant Professor of Otorhinolaryngology Head and Neck Surgery, Faculty of Medicine, Helwan University, Egypt.
5. Assistant Professor of Oral and Maxillofacial Surgery, School of Oral and Dental Medicine, Badr University in Cairo, Egypt.
6. Lecturer of Physical Therapy for Surgery, Faculty of Physical Therapy, Cairo University, Egypt.