Tamer Hasan Hassan is Professor of Pediatrics and pediatric Hematology and Oncology, Pediatric Department, Zagazig University, Egypt. Active member at EHA, SIOP, HAA, had over 50 international research publications in Pediatrics. Honored to be an author of two online book chapters. Professional training and workshops including; ICH GCP Online Training, Training in 10th International educational course on thalassemia, Cyprus 2006, Training in pediatric stem cell transplantation unit in Ulm University, Completion of EHA master class and bite size master class 2016 and 2017 respectively. Awarded many International Scholarships including SIOP, EHA-HOPE, Hemophilia Preceptorship in Saint Luc hospital, Belgium, ITP Preceptorship in Dmitry Rogachev National Research Center, Moscow. Academic editor in Medicine (Baltimore) Journal. Reviewer for many international journals (Hemophilia, Medicine, Oncology letters, Child neurology). Primary investigator in 2 international clinical trials and Sub-investigator in 10 international trials.