[1] Univ Toronto, Dept Lab Med & Pathobiol, Toronto, ON, Canada
[2] St Michaels Hosp, Dept Lab Med, Toronto, ON, Canada
[3] Mt Sinai Hosp, Dept Pathol & Lab Med, Toronto, ON, Canada
[4] Univ Hlth Network, Dept Clin Biochem, Toronto, ON, Canada
[5] Washington Univ, Sch Med, Dept Pathol & Immunol, Clin Microbiol, St Louis, MO USA
[6] Washington Univ, Sch Med, Dept Pathol & Immunol, Pediat, St Louis, MO USA
[7] Washington Univ, Sch Med, Dept Pathol & Immunol, Mol Microbiol, St Louis, MO USA
[8] Johns Hopkins Univ, Sch Med, Dept Anesthesiol & Crit Care Med, Educ Coordinat, Baltimore, MD 21205 USA
[9] Johns Hopkins Univ, Sch Med, Dept Anesthesiol & Crit Care Med, Continuing Med Educ, Baltimore, MD 21205 USA
[10] Johns Hopkins Univ, Sch Med, Dept Anesthesiol & Crit Care Med, Crit Care, Baltimore, MD 21205 USA
[11] St Josephs Hlth Ctr, Infect Dis, Toronto, ON, Canada
[12] St Josephs Hlth Ctr, Antimicrobial Stewardship Program, Toronto, ON, Canada
[13] Weill Cornell Med Coll, Dept Pathol & Lab Med, Cent Lab, New York, NY USA
[14] Weill Cornell Med Coll, Dept Pathol & Lab Med, Toxicol & Therapeut Drug Monitoring, New York, NY USA
[15] Weill Cornell Med Coll, Dept Pathol & Lab Med, New York, NY USA
[16] St Josephs Hlth Ctr, Antimicrobial Stewardship, Toronto, ON, Canada
[17] Publ Hlth Ontario, Antimicrobial Stewardship, Toronto, ON, Canada