1. Center of Hearing and Speech MEDINCUS, Poland; Institute of Sensory Organs, Poland; Institute of Physiology and Pathology of Hearing, Poland
2. World Hearing Center, Poland; Institute of Physiology and Pathology of Hearing, Poland
3. Center of Hearing and Speech MEDINCUS, Poland; Institute of Sensory Organs, Poland; World Hearing Center, Poland; Institute of Physiology and Pathology of Hearing, Poland; Institute of Physiology and Pathology of Hearing, Poland; Institute of Physiology and Pathology of Hearing, Poland; Medical University of Warsaw, Poland