Freiburg - Data: 03/10/2008 - 07/10/2008 http://www.colloquium.info/urlhost/cochrane/events/5319/Welcome.jsp?T=1210966609174&FORCE_QP=1&artegis_SID=0-254115-1253311613-2850-90-106-65-2314-48-10650-121-41123103118-1209649