Potential conflicts of interest. S. D. reports travel grant of the ESCMID PK/PD of Anti-Infectives Study Group (EPASG). B. C. P. K. reports grants or contracts unrelated to this work from Innovative Medicines Initiative (IMI), European Union, and Princess Beatrix Foundation; Foundation Coolsingel; a role as unpaid Board member for International Association of Therapeutic Drug Monitoring and Clinical Toxicology (IATDMCT), European Society of Clinical Microbiology and Infectious Diseases (ESCMID) EPASG, SWAB. All other authors report no potential conflicts. All authors have submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest. Conflicts that the editors consider relevant to the content of the manuscript have been disclosed.