The appropriate management of persisting pain after spine surgery: a European panel study with recommendations based on the RAND/UCLA method

Volker M. Tronnier, Sam Eldabe, Jörg Franke, Frank Huygen, Philippe Rigoard, Javier de Andres Ares, Richard Assaker, Alejandro Gomez-Rice, Marco La Grua, Maarten Moens, Lieven Moke, Christophe Perruchoud, Nasir A. Quraishi, Dominique A. Rothenfluh, Pedram Tabatabaei, Koen Van Boxem, Carmen Vleggeert-Lankamp, Björn Zoëga, Herman J. Stoevelaar^*