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 .
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 , clinical procedures , critical care , dermatology , emergency medicine , endocrinology , gastroenterology .