title: A practical guide to assigning levels of evidence.
authors.affiliation: The Hospital for Sick Children, 555 University Avenue, Toronto, ON M5G 1X8, Canada. james.wright@sickkids.ca
authors.forename: James G
authors.initials: JG
authors.lastname: Wright
mesh_terms: D019317:Evidence-Based Medicine / Q000145:classification* / Q000592:standards; D006801:Humans; D011643:Publishing; D012107:Research Design