Lundberg, Bo 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):1-59. https://doi.org/10.3109/ort.1969.40.suppl-119.01.