Fibroma/therapy; Laryngeal Neoplasms/drug therapy; Transfer Factor/therapeutic use; Adolescent; Adult; Airway Obstruction/complications; Animals; Cell Transformation, Neoplastic/drug effects; Child; Child, Preschool; Female; Fibroma/immunology; Fibroma/pathology; Guinea Pigs; Humans; Immunity, Cellular/drug effects; Laryngeal Neoplasms/immunology; Male; Middle Aged; Neoplasm Recurrence, Local/immunology; Papillomaviridae/isolation & purification; Plasma Cells; Polyomaviridae; T-Lymphocytes/drug effects; Transfer Factor/administration & dosage; Virus Replication