Lundberg, B. J. (1969) “The Frozen Shoulder: Clinical and Radiographical Observations the Effect of Manipulation Under General Anesthesia Structure and Glycosaminoglycan Content of the Joint Capsule Local Bone Metabolism”, Acta Orthopaedica, 40(sup119), pp. 1–59. doi: 10.3109/ort.1969.40.suppl-119.01.