What is the test for ineffective representation in a medical malpractice case?

In his supplemental brief, defendant contends that his attorney was ineffective because (as best we understand) he did not seek to suppress Rost's medical records and did not call Rost as a witness, thereby denying defendant his right to confront and cross-examine Rost. To prevail on his claim of ineffective assistance, defendant must establish that his counsel's representation fell below an objective standard of reasonableness and that there is a reasonable probability that, but for counsel's deficient performance, the result of the trial would have been different. (Strickland v. Washington (1984) 466 U.S. 668, 686-687.)