AbstractGet full access to this articleView all access options for this article.Get accessReferences1. Cherny NI , Baselga J. , de Conno F. , Radbruch L. Formulary availability and regulatory barriers to accessibility of opioids for cancer pain in Europe: a report from the ESMO/EAPC Opioid Policy Initiative . Ann Oncol 2010; 21: 615-626.