It happens quite often, that a doctor made a wrong diagnosis, because he didn't see the very rare tropical disease f.e..
Computer can make suggestions, so that the doctor don't overlook such rare diseases.
But also because of the very strong psychologic component of the most diseases (psychosomatic) a doctor, which will listen to you, will always have the basic place as a human in this business.
As i said before human interaction(i mean talking with patient, understanding the psychology of the patient etc.) is crucial. so no machine can do that(to my knowledge of course:) )
But besides that if ehealth delivers on decreasing wrong diagnosis with suggestions, that's also a plus.
This project comprehend telemedicine too, so you can be in contact with a doctor if needed.