Hannah, Jennifer	R., Gordon, Patrick	A., Galloway, James, Rutter, Megan, Peach, Emily	J., Rooney, Michael, Stilwell, Peter, Grainge, Matthew	J., Lanyon, Peter	C., Bythell, Mary, Pearce, Fiona	A., "Validation of methods to identify people with idiopathic inflammatory myopathies using hospital episode statistics", Rheumatology Advances in Practice, 2025