1 | Institute of Physiology and Pathology of Hearing, Zgrupowania AK „Kampinos” 1, 01-943 Warsaw, Poland |
2 | World Hearing Center, Mokra 17, Kajetany, 05-830 Nadarzyn, Poland |
3 | Otolaryngology and Rehabilitation Clinic, Physiotherapy Division, 2nd Faculty of Medicine, Medical University
of Warsaw, Poland |
4 | Institute of Sensory Organs, 1 Mokra Street, Kajetany, 05-830 Nadarzyn, Poland |