Torsten Hothorn, PhD, is a professor of biostatistics at the Epidemiology, Biostatistics and Prevention Institute of the University of Zurich, Switzerland. From 2000 to 2007, he worked first as a PhD student and later as a post-doctoral researcher and lecturer at the Institute for Medical Informatics, Biometry, and Epidemiology of the Friedrich-Alexander University of Erlangen-Nuremberg in Germany. In 2007, he accepted a professor of biostatistics position at the Department of Statistics at the Ludwig-Maximilian University of Munich, Germany. Since April 2013, he has served as a faculty member at the Medical Faculty and the Faculty of Science at the University of Zurich. Dr. Hothorn developed the research method of unbiased recursive partitioning.