Sen Ethan S, Beresford Michael W, Avčin Tadej, Ramanan A V
Department of Paediatric Rheumatology, Great North Children's Hospital, Queen Victoria Road, Newcastle upon Tyne NE1 4LP, UK,
Arch Dis Child Educ Pract Ed. 2013 Apr;98(2):52-7. doi: 10.1136/archdischild-2012-302321. Epub 2012 Oct 6.