title: First, do no harm.
authors.affiliation: School of Public Health, Tropical Medicine and Rehabilitation Sciences, James Cook University, Townsville, QLD, Australia. lgiles3@bigpond.com.
authors.forename: Lynton G F
authors.initials: LG
authors.lastname: Giles
mesh_terms: D000293:Adolescent; D002648:Child; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000009:adverse effects; D018570:Risk Assessment; D013122:Spinal Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed / Q000009:adverse effects*