What is the test for delivering expert reports in a medical malpractice case?

The parties agree that, for a medical malpractice case, a plaintiff must deliver expert reports to establish the standard of care, the breach of the standard of care, and that the negligent treatment was connected to the injury in question: see McNeil v. Easterbrook, [2004] O.J. No. 3976, at para. 16. Otherwise, there would be no genuine issue for trial and summary judgment should be granted in favour of the defendant.