Patients’ choice of healthcare provider for primary hip and knee arthroplasty: a national register-based observational cohort study of 62,676 patients from Norway, 2014–2018 - Beate Hauglann; Cato Kjærvik; Eva Stensland; Yohannes Tesfay; Anne Marie Fenstad; Ove Furnes; Tor Ingebrigtsen (Acta Orthopaedica, 2026)