The following investigators took part in the study:
Austria: Alfred Engel, Vienna; Karl Gruber, Weiz; Hans Georg Kress, Vienna; Rudolf Likar, Klagenfurt; Hans-Jörg Mischinger, Graz; Martin Mähring, Bruck a.d. Mur; Ernst Orthner, Wels; Franz Ortner, Wiener Neustadt; Danojla Roscic, Linz; Klaus Peter Samlicki, Wolfsberg; Gottfried Sauer, Eisenstadt; Mathias Scheyer, Feldkirch; Wolfgang Trost, Lienz; Christian Wurnig, Vienna; Michael Zimpfer, Vienna; Hans-Jörg Zinnecker, Mistelbach.
Denmark: Peter Ahlburg, Århus; Michael Crawford, Copenhagen; Jens Engbaek, Herlev; Nils-Christian Hjortsø, Glostrup; Birgitte Bruun Islev, Skive; Mogens Berg Laursen, Aalborg; Claus M. Lund, Hvidovre; Lars Riishede, Faaborg; Lilli Sørensen, Give; Dusanka Zaric, Frederiksberg.
Sweden: Anders Amilon, Örebro; Claes Bern, Hässleholm; Ulf Broström, Piteå; Thomas Dolk, Örebro; Jan Jakobsson, Stockholm; Jon Karlsson, Göteborg; Björn Nyberg, Huddinge; Dag Sandblom, Kristinehamn; Peter Spetz, Eskilstuna; Albert Sundberg, Eksjö.
Statistical analyses were performed at UNI·C, Århus, Denmark by Tine Høtbjerg Henriksen, MSc.
Editorial assistance with the manuscript was funded by Nycomed and the authors took the overall decision to submit the manuscript. The authors would like to thank ScopeMedical Ltd for editorial assistance with the manuscript.
Charlotte Hejl and Marija Simin-Geertsen are employees of Nycomed. Narinder Rawal, Karsten Krøner and Rudolf Likar have acted as consultants to Nycomed or received honoraria for speaking at Nycomed-sponsored meetings.