1. The diagnosis of congenital hip joint dislocation by the ultrasound combound treatment;Graf, R.;Arch Orthop Trauma Surg,1980
2. Real-time ultrasound in the diagnosis of congenital dislocation and dysplasia of the hip;Clarke, N.M.P.; Harcke, H.T.; McHugh, P.; Lee, M.S.; Borns, P.F.; MacEwen, G.D.;Jf Bone joint Surg Br,1985
3. Classification of hip joint dysplasia by means of sonography;Graf, R.;Arch Orthop Trauma Surg,1984
4. The anatomy and pathology of congenital dislocation of the hip;Dunn, P.M.;Clin Orthop,1976
5. An epidemiological assessment of neonatal screening for dislocation of the hip;Leck, I.;J R Coil Physicians Lond,1986