1. The correlation of middle ear aeration with mastoid pneumatization

   • J. Sadé

   Original investigations Pages: 301 - 304

2. Late effects of radiotherapy on hearing

   • L. J. Schot
   • F. J. M. Hilgers
   • W. A. Dreschler

   Original Investigations Pages: 305 - 308

3. Mode of action of photodynamic therapy with sulfonated aluminum phthalocyanine in induced squamous cell carcinomas in animal models

   • W. von Glafß
   • M. Káler
   • T. Lang

   Original Investigations Pages: 309 - 312

4. Clinical aspects and distribution of immunologically active cells in the nasal mucosa of patients with nasal polyps after endoscopic sinus surgery and treatment with topical corticosteroids

   • A. E. Stoop
   • H. A. M. D. van der Heijden
   • S. van der Baan

   Original Investigations Pages: 313 - 317

5. Kinin generation following methacholine nasal airway challenge of non-allergic subjects

   • C. R. Baumgarten
   • W. Niemz
   • G. Kunkel

   Original Investigations Pages: 318 - 321

6. Changes in voice characteristics after uvulopalatopharyngoplasty

   • H. Rihkanen
   • I. Soini

   Original Investigations Pages: 322 - 324

7. Maturation of binaural interaction components in auditory brainstem responses of young guinea pigs with monaural or binaural conductive hearing loss

   • M. Laska
   • M. Walger
   • H. von Wedel

   Original Investigations Pages: 325 - 328

8. Long-term hearing results of one-stage tympanoplasty for chronic otitis media

   • E. Vartiainen
   • J. Nuutinen

   Original Investigations Pages: 329 - 331

9. The anterior inferior cerebellar arterial network supplying the rat cochlea and its role in autoregulation of cochlear blood flow

   • M. D. Seidman
   • W. S. Quirk

   Original Investigations Pages: 332 - 335

10. Surgical lengthening of the short columella: division of the depressor septi muscles

    • H. Cachay-Velasquez

    Original Investigations Pages: 336 - 339

11. A histofluorescent study of sympathetic innervation of human palatine tonsils

    • H. -W. Wang
    • H. -L. Chen
    • J. -Y. Wang

    Original Investigations Pages: 340 - 343

12. Induction of transformation of human respiratory epithelium in vitro

    • P. Koldovsky
    • H. Bier
    • U. Ganzer

    Original Investigations Pages: 344 - 348

13. Micrometastases from squamous cell carcinoma in neck dissection specimens

    • M. W. M. van den Brekell
    • H. V. Stele
    • G. B. Snow

    Original Investigations Pages: 349 - 353

14. Clinical experience with the low-resistance Groningen button

    • J. T. van Lith-Bijll
    • H. F. Mahieul
    • R. J. Zijlstra

    Original Investigations Pages: 354 - 357

15. Announcements

    Announcement Pages: 358 - 358