Pogorzelski D, Nguyen U, McKay P, Thabane L, Camara M, Ramsey L, Seymour R, Goodman JB, McGee S, Fraifogl J, Hudgins A, Tanner SL, Bhandari M, Slobogean GP, Sprague S, PREP-IT Investigators Executive Committee:, Steering Committee, Adjudication Committee, Data and Safety Monitoring Committee, Research Methodology Core, Patient Centred Outcomes Core, Orthopaedic Surgery Core, Operating Room Core, Infectious Disease Core, Military Core, McMaster University Methods Center, University of Maryland School of Medicine Administrative Center, University of Maryland School of Pharmacy, The PATIENTS Program, PREP-IT Clinical Sites: Lead Clinical Site (Aqueous-PREP and PREPARE), Aqueous-PREP and PREPARE, Aqueous-PREP, PREPARE, PREP-IT Investigators Executive Committee