Judgment affirmed, without costs or disbursements.
The conclusory affidavit by the injured plaintiffs and the two unsworn letters from examining physicians which are devoid of any opinion or evidentiary facts supporting the malpractice claim, fail to establish, as a matter of law, that plaintiffs' claim is meritorious ( Kel Mgt. Corp. v. Rogers Wells, 64 N.Y.2d 904; Amodeo v. Radler, 89 A.D.2d 594, affd 59 N.Y.2d 1001; O'Halloran v. Eller, 43 A.D.2d 955). Plaintiffs have also failed to demonstrate a satisfactory excuse for their failure to comply with a demand for medical authorizations. Thus, Special Term did not abuse its discretion in denying plaintiffs' renewed motion to vacate their default and the complaint was properly dismissed as to defendant Shiffman. Lazer, J.P., Gibbons, Thompson and Niehoff, JJ., concur.