| 1994-
| Member, European Association for Health Information Libraries
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| 1995-
| Member, Medical Libraries Association (MLA) and International Cooperation Section / MLA
|
| 1999-2002
| National Delegate of Germany, Council of the European Association for Health Information Libraries
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| 2001-2002
| Chair, International Programme Committee 8th EAHIL Conference, Cologne
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| 2003-2004
| Member, International Programme Committee 9th EAHIL Conference, Santander
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| 2004-
| Founder, medinfo weblog
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| 2006-2008
| Member, International Programme Committee 11th EAHIL Conference, Helsinki
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| 2006-2009
| Member, International Committee 10th International Congress on Medical Librarianship, Brisbane
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| 2007
| Lectureship in Library and Information Science at the Sultan Qaboos University, Muscat, Oman |
| 2007-
| Member, Editorial Board, Journal of the European Association for Health and Information Libraries
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| 2007-2010
| National Delegate of Germany, Council of the European Association for Health Information Libraries
|
| 2008-2009
| Member, International Programme Committee 10th ICML Conference, Brisbane
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| 2009-2010
| Member, International Programme Committee 12th EAHIL Conference, Lisbon
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| 2009-
| Member, Nature Library Committee
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| 2010-
| Member, Library Advisory Committee of UpToDate
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| 2010-2012
| Member, International Programme Committee 13th EAHIL Conference, Brussels
|