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Ultrasound measurement of joint cartilage thickness in large and small joints in healthy children: a clinical pilot study assessing observer variability
Pediatric Rheumatology 2007, 5:3 doi:10.1186/1546-0096-5-3
Pediatric Rheumatology 2007, 5:3 doi:10.1186/1546-0096-5-3
