EMedicine

eMedicine is an online clinical medical knowledge base founded in 1996 by two medical doctors, Scott Plantz and Richard Lavely. The website is searchable by keyword and consists of approximately 6,800 articles, each of which is associated with one of 62 clinical subspecialty textbooks. Pediatrics, for example, consists of 14 subspecialty textbooks (endocrinology, genetics, cardiology, pulmonology, etc.). For example, 750 articles comprise the textbook on emergency medicine. Each article is authored by board certified specialists in the subspecialty to which the article belongs. The article's authors are identified with their current faculty appointments. Each article is updated yearly and the date is published on the article.

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 considerably since then to include allergy and immunology, cardiology, clinical procedures, critical care, dermatology, emergency medicine, endocrinology, gastroenterology. genomic medicine, hematology, infectious diseases, nephrology, neurology, obstetrics/gynecology, oncology, pathology, perioperative care, physical medicine and rehabilitation, psychiatry, pulmonology, radiology, rheumatology, and sports medicine. Surgical subspecialties include neurosurgery, ophthalmology, orthopedic surgery, (ENT) and facial plastic surgery, plastic surgery, thoracic surgery, transplantation, Trauma, urology, and vascular surgery. It is web-based.

...
Wikipedia