MEDoctor, Inc. announces the release of Version 4.1 of its patented online symptom checker, covering over 850 diseases and conditions. People all over the world are utilizing this free differential diagnosis system to understand their health problems and improve communication with their health care providers.(PRWeb November 03, 2014)Read the full story at http://www.prweb.com/releases/2014/11/prweb12289318.htm