1. Department of Medical Psychology, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
2. National Bleeding Disorders Foundation, New York, NY, USA
3. Munson Medical Center, Quality & Safety Department, Traverse City, MI and National Bleeding Disorders Foundation, consultant to the Research Department, New York, NY, USA
4. Haemnet Ltd, London, UK
5. Consultant, Windsor, Ontario, Canada
6. National Bleeding Disorders Foundation at time of research, consultant at time of publication, Traverse City, MI, USA