1 Department of Otorhinolaryngology, Head and Neck Surgery, AmsterdamUMC, Amsterdam, The Netherlands; YO-IFOS Sustainability Committee: "Young Otorhinolaryngologists for Sustainability". Electronic address: m.c.eggink@amsterdamumc.nl.
2 Division of Facial Plastic and Reconstructive Surgery, Department of Otolaryngology-Head and Neck Surgery, University of Cincinnati College of Medicine, Cincinnati, OH, United States of America; YO-IFOS Sustainability Committee: "Young Otorhinolaryngologists for Sustainability".
3 Department of Paediatric Otolaryngology, Assistance Publique-Hôpitaux de Paris, Hôpital Necker-Enfants-Malades, Paris, France; YO-IFOS Executive Board.