It was sold to
WebMD in January 2006.
The site is free to use, requiring only
registration. More than 10,000 contributors from several countries participated in the creation of the articles. It is operated as an
e-book, the articles can be downloaded into a
palm top device.
It was originally conceived in 1996 as an
emergency medicine textbook but its content has expanded a lot since then to include
allergy and immunology,
perioperative care, physical medicine and
sports medicine. Surgical subspecialties include
(ENT) and facial