%0 Journal Article %T What do different databases tell about the use of opioids in seven European countries in 2002? %A Hamunen, Katri %A Laitinen‐Parkkonen, Pirjo %A Paakkari, Pirkko %A Breivik, Harald %A Gordh, Torsten %A Jensen, Niels Henrik %A Kalso, Eija %J European Journal of Pain %V 12 %N 6 %@ 1090-3801 %D 2008-08-01 %I Wiley Subscription Services, Inc., A Wiley Company %~ DeepDyve