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, cardiology,
critical care, dermatology, emergency medicine, endocrinology, gastroenterology.
obstetrics/gynecology, oncology, pathology,
perioperative care, physical medicine and
rehabilitation, psychiatry, pulmonology, radiology,
sports medicine. Surgical subspecialties include neurosurgery, ophthalmology,
(ENT) and facial plastic surgery, plastic surgery,
thoracic surgery, transplantation,