Doctors Do Not Want Patients to See EHR

In today's medical practice, one would
think that patients should have access to their medical health
records (EHRs). On the contrary say the doctors. 65% of doctors
would agree to very limited access and 4% don't think patients should
see any of their records, electronic or otherwise. Is this the
reason for two sets of records kept by many medical practices and
hospitals? What are they