1. Abnormal maxillary sinus radiographs in children: Do they represent bacterial infection?;Arruda;Pediatrics,1990
2. Selective immunoglobulin G4 deficiency and recurrent infections of the respiratory tract;Beck;Am Rev Respir Dis,1981
3. Immunodeficiency syndrome with otorhinolar-yngological manifestations;Berdal;Acta Otolaryngol,1976
4. The relationship between nasopharyngitis and the middle ear;Bernstein,1991
5. Bactériologie features of chronic sinusitis in children;Brook;JAMA,1981