Primary Care Physician's Attitude Towards the GERMAN e-Health Card Project - Determinants and Implications. - Nicole Ernstmann; Oliver Ommen; Melanie Neumann; Antje Hammer; Raymond Voltz; Holger Pfaff (J. Medical Syst., 2009)

Configural frequency analysis as a method of determining patients' preferred decision-making roles in dialysis. - Sabine Loeffert; Oliver Ommen; Christine Kuch; Fueloep Scheibler; Andrej Woehrmann; Conrad Baldamus; Holger Pfaff (BMC Medical Informatics Decis. Mak., 2010)