Is it actionable negligence for a physician to adhere to one school of medical thought or approach and not another?

It is not actionable negligence for a physician to adhere to one school of medical thought or approach and not another where there is conflicting evidence from highly qualified experts regarding the validity of a diagnosis, lack of a diagnosis, or the appropriate method of treatment. This is so, provided the physician can otherwise meet the standard of care of the average physician in his or her peer group. (See Lapointe v. Hôpital le Gardeur, supra).