"Device User Survey Evaluation MethodPTNCI" . "C92021"^^ . . "FDA"^^ . "USER SURVEYPTFDA3368" . "Device User Survey Evaluation Method"^^ . "C2984754"^^ . "Device User Survey Evaluation Method"^^ . . . "Functional Concept"^^ . . "Questioning a pre-defined group of users about their practices.FDA" .