Betz, U., Langanki, L., Heid, F., Spielberger, J., Schollenberger, L., Kronfeld, K., Büttner, M. , Büchler, B. , Goldhofer, M., Eckhard, L., Drees, .P. and the PROMISE GROUP 2020. The PROMISE study protocol: a multicenter prospective study of process optimization with interdisciplinary and cross-sectoral care for German patients receiving hip and knee endoprostheses. Acta Orthopaedica. 92, 2 (Dec. 2020), 156–162. DOI:https://doi.org/10.1080/17453674.2020.1853927.