Authors: Julia Bohlius; Kurt Schmidlin; Corinne Brillant; Guido Schwarzer; Sven Trelle; Jerome Seidenfeld; Marcel Zwahlen; Mike J Clarke; Olaf Weingart; Sabine Kluge; Margaret Piper; Maryann Napoli; Dirk Rades; David Steensma; Benjamin Djulbegovic; Martin F Fey; Isabelle Ray-Coquard; Volker Moebus; Gillian Thomas; Michael Untch; Martin Schumacher; Matthias Egger; Andreas Engert Journal: Cochrane Database Syst Rev Date: 2009-07-08