scientific article published on 7 May 2009
author: Urs Maurer, Silvia Brem, Hans-Christoph Steinhausen, Kerstin Bucher, Felicitas Kranz, Rosmarie Benz
Copyright status information is not available for this work. The copyright status depends on the jurisdiction, the author's date of death and the date the work was created or published.
To learn more about copyright terms in different countries, visit the countries and terms page.