Dr. Plantz, Dr. Adler and Mr. Berezin evolved the concept for eMedicine.com in 1996 and deployed the initial site via Boston Medical Publishing, Inc., a corporation in which Plantz and Adler were principals. Over a period of 1.5 years the Group Publishing System 1 (GPS 1) was developed that allowed large numbers of contributors to collaborate simultaneously. That system was first used to create a knowledge base in Emergency Medicine with 600 contributing MDs creating over 630 chapters in just over a year. In 1997 eMedicine.com, Inc. was legally spun off from Boston Medical Publishing. With growing traction as a revolutionary online healthcare publishing company eMedicine attracted angel level investment from Tenet Healthcare in 1999 and a significant VC investment in 2000 (Omnicom Group, HIG Capital). All investor companies held seats on the eMedicine Board of Directors.