In bringing a personal injury or medical malpractice action, a plaintiff must disclose medical records which are "material and relevant" to the injuries placed at issue. The Court of Appeals has established that "by bringing or defending a personal injury action in which mental or physical condition is affirmatively put in issue, a party waives the doctor-patient privilege." Koump v. Smith, 25 N.Y.2d 287(1969), Dillenbeck v. Hess, 73 N.Y.2d 278 (1989).