@article{BoethBiesenHollnageletal.2021, author = {Heide Boeth and Robert Biesen and Jeremias Hollnagel and Sandra Herrmann and Rainald Ehrig and Lorenzo Pelli and William R. Taylor and Georg Duda and Frank Buttgereit}, title = {Quantification of morning stiffness to assess disease activity and treatment effects in rheumatoid arthritis}, journal = {Rheumatology}, volume = {60}, number = {11}, pages = {5282 -- 5291}, doi = {10.1093/rheumatology/keab323}, year = {2021}, }