Ålund, Martin, Carsten Hoe-Hansen, Bo Tillander, Bengt-Åke Hedén, and Rolf Norlin. 2000. “Outcome After Cup Hemiarthroplasty in the Rheumatoid Shoulder: A Retrospective Evaluation of 39 Patients Followed for 2-6 Years”. Acta Orthopaedica 71 (2):180-84. https://doi.org/10.1080/000164700317413166.