. . "0"^^ . "0"^^ . . "respirator that produces alternations in air pressure in a chamber surrounding a patient's chest to force air into and out of the lungs thus providing artificial respiration"@en-us . . "iron lung"@en-us . "103453580"@en-us . "03586219-n"^^ . . . . "103586219"^^ . . "iron lung"^^ . .