Juan Pablo Horcajada, MD, PhD Chief of the Department of Infectious Diseases at Hospital del Mar, Barcelona, Spain. His field of research is about optimizing the use of antibiotics, and applying PK/PD data for the treatment of complex and difficult to treat infections, including healthcare associated, and infections due to multidrug resistant microorganisms, specially extremely resistant Pseudomonas aeruginosa . Coordinator of the Infectious Pathology and Antimicrobials Research Group (IPAR) at the Institut Hospital del Mar d'Investigations Mèdiques (IMIM) of Barcelona. He has published more than 200 scientific articles, and has directed several competitive research projects as a principal investigator, and several doctoral thesis. He participates in several international clinical trials with antimicrobials. Professor of the Department of Medicine at Autonomous University of Barcelona. Catalan Coordinator of regional Antimicrobial Stewardship Programs (PROA-VINCAT). President of the Catalan Society of Infectious Diseases and Clinical Microbiology. Spanish Delegate of the European Committee for Infection Control (EUCIC) of the European Society of Clinical Microbiology and Infectious Diseases (ESCMID).