Greitemann, Bernhard, et al. “Treatment of Congenital Elevation of the Scapula: 10 (2–18) Year Follow-up of 37 Cases of Sprengel’s Deformity”. Acta Orthopaedica, vol. 64, no. 3, Jan. 1993, pp. 365-8, doi:10.3109/17453679308993646.