We are grateful to Markus Loeffler for his substantial support in
establishing the research group Onto-Med and for his fruitful
discussions on applications in medicine.
We would like to thank Roberto Poli for inspiring discussions on
levels of reality, and the Mitteleuropa Foundation for supporting our
Our thanks go to Janet Kelso for her stimulating discussions and
fruitful collaboration on applications in the bio-medical field.
We are indebted to Johanna Seibt for many helpful comments and
critical remarks on our approach to the ontological categories of GFO.
Many thanks go to Josef Seifert for his discussions on the principles of
phenomenological realism and for his valuable hints on competitive
philosophical approaches in formal ontology.
We thank Gerd Wagner and Giancarlo Guizzardi for successful collaboration on
applications of GFO to the field of conceptual modelling.
Moreover, we thank Jorge Gracia for his comments on a pluralistic
approach to categories that proved to be fundamental in the field of
Last but not least, we thank our numerous experts in the field of
medicine and medical informatics for their fruitful discussions on the
application topics, and Christine Green for her large effort in the
editorial work of this paper.