A metadata vocabulary for self- and third-party labeling of health web-sites: Health Information Disclosure, Description and Evaluation Language (HIDDEL). - Gunther Eysenbach; Christian Köhler 007; Gabriel Yihune; Kristian Lampe; Phil Cross; Dan Brickley (AMIA, 2001)

A Framework for Improving the Quality of Health Information on the World-Wide-Web and Bettering Public (E-)Health: The Medcertain Approach. - Gunther Eysenbach; Christian Köhler 007; Gabriel Yihune; Kristian Lampe; Phil Cross; Dan Brickley (MedInfo, 2001)

MedCIRCLE - Collaboration for Internet Rating, Certification, Labeling and Evaluation of Health Information on the Semantic World Wide Web. - Gunther Eysenbach; Christian Köhler 007; Thomas Roth-Berghofer; Miguel Angel Mayer; Michael Fiene; Stéfan Jacques Darmoni (AMIA, 2002)

DAERI - A Case Database for Adverse Events Related to the Internet. - Christian Köhler 007; Gunther Eysenbach (AMIA, 2002)

What is the prevalence of health-related searches on the World Wide Web? Qualitative and quantitative analysis of search engine queries on the Internet. - Gunther Eysenbach; Christian Köhler 007 (AMIA, 2003)

Societal Dimensions of third-party Evaluation of Internet Health Content. - Kristian Lampe; Phil Cross; Dan Brickley; Christian Köhler 007; Risto Roine; Gunther Eysenbach (MIE, 2003)

MedCIRCLE: Collaboration for Internet Rating, Certification, Labelling and Evaluation of Health Information on the World-Wide-Web. - Miguel Angel Mayer; Stéfan Jacques Darmoni; Michael Fiene; Christian Köhler 007; Thomas Roth-Berghofer; Gunther Eysenbach (MIE, 2003)