Justice (concurring in part and concurring in the result).
I concur with the holding of the main opinion that the relation-back doctrine does not apply in this case because of the lack of due diligence by the plaintiffs before and at the time of the filing of the complaint. As to the discussion in the main opinion regarding the lack of due diligence in identifying Dr. Younus Ismail beyond the time of the filing of the original complaint, I express no opinion.