MEDoctor Inc. announces the release of Version 4.2 of its patented online symptom checker and differential diagnosis system. It will provide live demonstrations and debut its advertising media and co-registration and lead generation programs in the APPNATION VII Marketplace Garage, on the CES Expo Floor in Las Vegas from January 6-9, 2016.(PRWeb January 06, 2016)Read the full story at http://www.prweb.com/releases/2016/01/prweb13153921.htm