Definition of Health 2.0 and Medicine 2.0

My good friends, Tom H Van De Belt and Lucien JLPG Engelen from the Radboud University Nijmegen Medical Centre just published a great systematic review about the definitions of medicine 2.0 and health 2.0 It was time to collect all the available data about these terms. An excerpt from the abstract:

Objective: The objective was to identify unique definitions of Health 2.0/Medicine 2.0 and recurrent topics within the definitions.
Methods: A systematic literature review of electronic databases (PubMed, Scopus, CINAHL) and gray literature on the Internet using the search engines Google, Bing, and Yahoo was performed to find unique definitions of Health 2.0/Medicine 2.0.
Results: We found a total of 1937 articles, 533 in scientific databases and 1404 in the gray literature. We selected 46 unique definitions for further analysis and identified 7 main topics.
Conclusions: Health 2.0/Medicine 2.0 are still developing areas. Many articles concerning this subject were found, primarily on the Internet. However, there is still no general consensus regarding the definition of Health 2.0/Medicine 2.0.