Judith Kal-van Gestel works since 2003 as a data manager in the Erasmus Medical Center Rotterdam, The Netherlands at the Division of Nephrology and Transplantation. She graduated in 1992 at the University Utrecht in the field of Biomedical Sciences. After graduation she first worked as a clinical research assistant in the fields of cardiac transplantation and electrophysiology. For almost 2 years she worked abroad as a data manager at the Department of Cardiology, St. George’s Hospital in London, UK. She is also a freelance monitor for clinical studies. She has contributed to several publications and to the design of study databases.