SC20529 - Riccio v. Bristol Hospital, Inc. ("The appeal in this medical malpractice action requires us to determine whether the trial court correctly concluded that the accidental failure of suit statute, General Statutes § 52-592, did not save the otherwise time barred action of the plaintiff, Joann Riccio, executrix of the estate of Theresa Riccio, because her first medical malpractice action was dismissed due to her attorney's gross negligence for failing to file with her complaint legally sufficient medical opinion letters, as required by General Statutes § 52-190a (a) and two Appellate Court decisions interpreting that statute. Specifically, we must determine whether the plaintiff met her burden of proving that her attorney's admitted failure to know of two Appellate Court decisions, issued six years before she initiated the first action, was a mistake, inadvertence, or excusable neglect rather than egregious conduct or gross negligence. We agree with the trial court that the plaintiff has not met her burden and, therefore, affirm its judgment.")