On the occasion of the golden jubilee of Mansoura University, and at the kind invitation of Prof. Dr. Ashraf Abdel Basset, president of the University, Prof. Dr. Ashraf Shoma, dean of the college, and Prof. Dr. Mohammed Hijazi, Executive Director, Prof. Dr. Dr. Sayed Salem Al –Sayed, Prof. Dr. Hanan Jawish, Prof. Dr. Manal tarshoubi, Prof. Dr. Mohammed Yakut, Prof. Dr. Maha Maher managers of specialized internal medicine hospital