Dr. Margaritis Eleutherios, MD, MSc, PhD, is a Pediatric Otolaryngologist with a private practice in Chaidari. He completed his doctoral dissertation at the National and Kapodistrian University of Athens and received further training in rhinology - nasal surgery in Amsterdam. He holds a postgraduate degree in "Health Services Organization and Management" from the National and Kapodistrian University of Athens and certifications in Basic Life Support (BLS) and Advanced Trauma Life Support (ATLS). Additionally, he possesses extensive experience in allergic rhinitis, nasal and paranasal sinus surgery, and pediatric ENT disorders, having specialized at the ENT clinics of the Academic Medical Center of Amsterdam, the General Hospital of Athens "Hippokration," and the General Children's Hospital of Athens "P. & A. Kyriakou." Throughout his career, he has worked in numerous hospitals in Greece and abroad, including the 1st ENT Clinic of the University of Athens and the Academic Medical Center (AMC) in the Netherlands. Currently, he offers the full range of otorhinolaryngological services at his clinic, as well as home visits in collaboration with the 1st ENT Clinic of the University of Athens and specialized private treatment centers. He has published articles and presentations in Greek and international journals and has contributed to the authorship of scientific books. Finally, Dr. Margaritis Eleutherios is a member of the Medical Association of Athens, the Panhellenic Society of Otolaryngology - Head and Neck Surgery, and the Panhellenic Rhinologic Society.