The “Different Methods” jury instruction (3 OJI Section 331.02, para 3) should only be used when there is evidence that more than one method of diagnosis or treatment is acceptable for a particular medical condition.  See Pesek v. Univ. Neurologists Assoc., Inc. (2000), 87 Ohio St.3d 495; Peffer v. Cleveland Clinic Found., 177 Ohio App.3d 403, 2008-Ohio-3688.