Surgery with locking plate or hemiarthroplasty versus nonoperative treatment of 3-4-part proximal humerus fractures in older patients (NITEP): An open-label randomized trial. - Launonen AP; Sumrein BO; Reito A; Lepola V; Paloneva J; Berg HE; Felländer-Tsai L; Kask K; Rahnel T; Tootsi K; Märtson A; Jonsson KB; et al. (PLoS medicine, 2023)