Development of quality indicators for hand osteoarthritis care – Results from an European consensus study by Daniel H. Bordvik, Yeliz Prior, Rachael Bamford, Francis Berenbaum, Mathilda Björk, Thalita Blanck, Barbara Slatkowsky Christensen, Krysia Dziedzic, John Edwards, Nazemin Gilanliogullari, Carol Graham, Ida K. Haugen, Margreet Kloppenburg, Hellen Laheij, Marco J.P.F. Ritt, Tanja Stamm, Anne Therese Tveter, Nina Østerås, Ingvild Kjeken