The project was led by ORGANIZATION@1 , it was announced on December NUMBER@1 , NUMBER@2 and was opened in beta to the public on July NUMBER@3 , NUMBER@4 with a few hundred articles mostly in the health and medical field .

The project was announced on December NUMBER@1 , NUMBER@2 and opened in beta to the public on July NUMBER@3 , NUMBER@4 . When it was opened , there were a few hundred articles mostly about health and medicine .
