Prof. Ahmed Geneid is adjunct professor, laryngologist and phoniatrician. He is a head of department in Helsinki University Hospital of Otolaryngology-Head and Neck Surgery. Prof. Geneid is served as president and founding member of Finnish Laryngological Society and president of Union of the European Phoniatricians in addition to being currently vice-president and founding member of the International Association of TransVoice Surgeons. He leads a multidisciplinary team specifically focused on dealing with voice and swallowing patients in Helsinki University Hospital, Finland. Prof. Geneid authored over 75 peer-reviewed international articles and chapters of textbooks. In addition, he teaches regularly on different laryngology and phonosurgery topics. Prof. Geneid is merited as Finland’s ENT doctor of the year 2020 by Finnish association of Otorhinolaryngology- Head and Neck Surgery. He also received different awards as best presenter for two times by Finnish association of Otorhinolaryngology- Head and Neck Surgery. One of his articles received Journal of Voice Best Paper Award in 2013.

Dr. Antonio Ballestas is an ENT surgeon with over 30 years of experience providing care to his patients. He founded Voicefem - Voice Feminization Colombia in 2014, pioneering voice feminization surgery in Latin America with a modified Wendler Glottoplasty technique, changing the lives of hundreds of patients. Dr. Ballestas completed his residency in 1987 at the University of Costa Rica and his fellowship in 1988 at Bordeaux University in France. He completed a mini-fellowship in Laryngology at Emory University in 2012 and has been a visiting doctor at Harvard University (USA), Hospital San Lucas (Brazil) and Hospital Quiron (Spain), Hospital Militar(Bogotá) Dr. Ballestas has published his work in the Journal of the Colombian Ear Nose and Throat Society. His work has been presented in the USA, Colombia, Brazil, Argentina, and Germany. He has served as president of Colombia’s Atlantico Society of ENT.

Dr Antonio Cuesta-Muñoz is Endocrinologist and has been working in the field of the impact of Testosterone on the voice masculinization in transgender individuals in order to enhance the masculine voice quality. For the last five years Dr. Cuesta-Muñoz has been collaborating with Dr. Casado implementing adjuvant testosterone treatment to those patients who underwent voice masculinization surgery.

Dr. Brian Nuyen is a Stanford School of Medicine Clinical Assistant Professor in the Division of Laryngology, Department of Otolaryngology-Head and Neck Surgery. He is the Co-Director of the Stanford Gender Affirmation Voice Center, focusing on identity-aligning clinical care, research, teaching, and advocacy of vocal gender affirmation.

Mr Chadwan Al Yaghchi, MD PhD FRCS, is a consultant laryngologist at the National Centre for Airway Reconstruction at Imperial College Healthcare. He manages the full spectrum of laryngeal disorders with a specialist interest in airway stenosis and complex dysphagia. Mr Al Yaghchi holds a PhD in Molecular Oncology from Queen Mary’s University of London, studying oncolytic viruses in head and neck cancers. In addition, he has an active clinical research program in voice, airway, and swallowing disorders. He has published multiple book chapters and more than 30 peer-reviewed articles and is currently the laryngology section editor of Scott-Brown's Otolaryngology. 
Mr Al Yaghchi is an internationally renowned specialist in gender-affirming voice surgery. He introduced a number of voice feminization procedures to the UK, including his own modification to the Wendler Glottoplasty technique and Vocal Fold Muscle Reduction. He is a founding member of the International Association of TransVoice Surgeons. He is a founding member of the British Laryngological Association and the honorary treasurer. He is a board member of the UK Swallowing Research Group and has served as a Vice president of the Royal Society of Medicine Section of Laryngology and Rhinology.

Christella Antoni, MSc, BA Hons., HCPC, MRCSLT, MASLTIP, is a Consultant Speech & Language Therapist specializing in voice work. With over 25 years of experience, she has worked extensively in both NHS and independent settings, focusing on voice rehabilitation, professional voice, singing, performance, and transgender voice modification. Christella is renowned for her expertise in Voicecraft and offers training courses for Speech & Language Therapists internationally. She has published in the field and developed the voice feminization app, Christella VoiceUp. As a visiting lecturer at University College London, she continues to contribute to research and education while also making appearances in various media outlets.

Evelien D’haeseleer, (she/her), is associate professor at the Center for Speech and Language Sciences at Ghent University and lecturer at the Musical Department of the Brussels Royal Conservatory in Belgium. She works as a voice clinician at the multidisciplinary gender team and the voice clinic of the ENT Department of Ghent University Hospital and is a member of the International Association of Logopaedics and Phoniatrics (IALP) and the European Professional Association of Transgender Health (EPATH) scientific voice committee. Her main areas of interest within voice research are transgender voice, effectiveness of voice training and voice in elite vocal performers.

He completed his specialist training at the Federal University of Paraná (ENT) in 2000, Master in Medicine (Surgical Clinic) (2011) and Doctorate in Medicine (Surgical Clinic) from the Federal University of Paraná (2015). Currently an Otorhinolaryngologist at the Hospital de Clínicas of UFPR. Adjunct Professor of Otorhinolaryngology at UFPR. Coordinator and Professor of the Lato Sensu Specialization in Otorhinolaryngology at UFPR. Preceptor of Medical Residency in Otorhinolaryngology, Hospital de Clínicas, UFPR. Head of the voice surgery clinic for transgender people, Federal University of Paraná. Laryngologist trained in laryngeal microsurgery and laryngeal framework surgeries (Thyroplasties). Since 2017, he has specialized in Voice Feminization Surgeries IATVS Full Member since 2023

Dr. H. Steven Sims is a board-certified Laryngologist and Director of the Chicago Institute for Voice Care at the University of Illinois Chicago Medical Center. He chose a career in professional voice care as an extension of his two passions: medicine and singing. He is from musical family and is an accomplished baritone and instrumentalist. He plays trombone, bassoon, and piano and sang in choirs during his undergraduate studies at Yale University. After completing Yale Medical School he secured a research fellowship at the National Institute on Deafness and Communication Disorders before a residency at Yale Otolaryngology. He completed a fellowship in care of the professional voice at Vanderbilt University. He is committed to identifying and addressing healthcare disparities as well as the effects of structural racism on medical education and the practice of medicine. He leads the anti-racism curriculum at UIC College of Medicine. Clinical areas of specialty include performing arts medicine, gender affirming voice care, and professional voice care.

Dr. Hakan Birkent is a graduate of Gulhane Military Medical School, Ankara, Turkey. He completed his residency programme at the Otorhinolaryngology&Head and Neck Surgery Department of Gulhane Military Medical Academy in 2002, and has trained in laryngology at the Otolaryngology Department of University of Washington in Seattle,WA,USA between 2007-2008. He had the degree of Associate Professor in 2010, and Full Professor in 2019. He is now seeing his patients at Liv Hospital in Istanbul/Turkey. Dr.Birkent has over 60 papers published and indexed in the medical literature. He has recently described a new surgical technique for voice feminization which is called as “Tensioning Glottoplasty”. He is a founding member of the International Association of Trans Voice Surgeons. He is also a member of the European Laryngological Society, and the Union of the Europian Phoniatricians.

Hyung-Tae Kim, MD, Ph.D., is an adjunct professor at the Department of Otolaryngology-Head and Neck Surgery at The Catholic University of Korea in Seoul, South Korea. Since 2003, he has been privileged to lead the Yeson Voice Center in Seoul. A humble dedication to advancing knowledge has marked his contributions to the field of laryngology. In 1998, he introduced EMG-guided injection laryngoplasty, and also developed the multichannel phonokinetic evaluation system to assist professional singers and pioneered the vocal fold shortening with retrodisplacement of the anterior commissure (VFSRAC) technique for gender-affirming voice surgery. He is honored to be the founder and chairman of the Korean Foundation for Voice of Performing Arts board. He currently serves as the vice president of the Korea International Medical Association. With a deep sense of humility, he actively engages in international trans-healthcare and pedagogical organizations, aiming to contribute to his field with unwavering dedication and a commitment to lifelong learning.

James P. Thomas, M.D. subspecialized in laryngology in 1998. He enjoyed learning from pioneers in the field1 from Europe to China. Known around the world for his YouTube channel, VOXDOC - the voicedoctor and website voicedoctor.net offering referrals, photographs and video instruction on voice disorder diagnosis; for his teaching methods on diagnosing voice disorders and for his writing. His publication, “Why is there a frog in my throat? — A guide to hoarseness” offers young laryngologists insights into the function of the human vocal cords. Interactive teaching on diagnosis is online at https://www.voicedoctor.net/diagnosis His controversial perspectives on the voice, including diagnosis by ear, visual neurolaryngology and the critisicm of overuse of anti-reflux medication in laryngology, lead to thoughtful discussion about the mechanisms of injury to the vocal cords. He has pioneered Feminization laryngoplasty, a transgender laryngeal surgery to alter comfortable speaking pitch and vocal range. He has published in academic journals on denervation, reflux laryngitis (or lack thereof), spasmodic dysphonia treatment and transgender surgery. He has authored textbook chapters including the Nerurkar’s Laryngology, Salgado’s Gender Affirmation surgery, Prasad & Remacle’s Advances in neurolaryngology, Chandrsekar’s Otolaryngologic Clinics of North America Gender Affirmation in Otolaryngology: Compassion and Techniques.

Jordan Majdalani, MS, CCC-SLP, is a speech pathologist specializing in gender-affirming voice care for trans and nonbinary individuals. Through their online practice, Jordan Ross Communication, they help trans youth and adults worldwide develop a voice that feels authentic and aligned with their identity.

Dr. Juan Carlos Casado Morente, a Medical Specialist in ORL, co-directs Otorhinolaryngology services at Quirón Hospital of Marbella and Costa del Sol Hospital. His doctoral thesis focused on vocal pathology, and he has authored books on voice disorders. As a frequent speaker at conferences and a professor at UCAM and UMA, he's a respected figure in the field. Additionally, he's a founding member of IATVS and actively contributes to various medical societies, including serving as President of the Commission of Laryngology, Voice, and Swallowing of the Spanish Society of Otorhinolaryngology and Cervico-facial Pathology.

Dr. Kursat Yelken is a Professor of Otolaryngology, Head&Neck Surgery and a Fellow of the European Board of Otolaryngology, Head&Neck Surgery. After graduating from Ankara University, Faculty of Medicine, he became ENT specialist with a thesis entitled ''a comparison of voices of singing students studying in different music types, by means of acoustic analysis'' in 2005. He was awarded with a scholarship from The Scientific and Technological Research Council of Turkey and served as a fellow at Harvard Medical School, MEEI Department of Laryngology between 2008-2009. Prof. Dr. Kursat Yelken is the former president of Turkish Voice Speech and Swallowing Society and the current president of VoiceIstanbul Congress. He published over 50 articles in international and national journals; continually gives lectures and makes presentations in international and national conferences. He is the founder of Voicest Clinic in Istanbul and continues to serve in this clinic since 2016.

María Soledad Ángulo Serrano is a specialist in speech-language pathology and vocal rehabilitation, with a particular focus on pitch elevation therapy. She holds a degree in Speech and Language Therapy from the University of Málaga, a Master’s in Voice Rehabilitation from the Autonomous University of Barcelona, and a Master’s in Language Development and Voice Disorders from the Catholic University of Murcia. She earned her Ph.D. in Psychology from the Complutense University of Madrid, where her research focused on voice and its clinical applications. With extensive experience in the assessment and treatment of vocal pathologies, Dr. Ángulo Serrano works as a speech therapist at Hospital Quirón and Clínica Doctor Casado. She specializes in voice rehabilitation following vocal feminization surgery and in pitch modification therapy. Her commitment to vocal health and her evidence-based approach make her a leading expert in the field, dedicated to helping individuals achieve their desired vocal identity.

Markus Hess, MD, otolaryngologist and phoniatrician, specialized in laryngology, phonosurgery, professional voice disorders. Head of first Voice Clinic in Germany (MEDICAL VOICE CENTER), chairman of PEVOC, founder of European Academy of Voice (EAV), past president CoMeT, founder of German Society of Phonosurgery, president of International Association of Transvoice Surgeons (IATVS). Introduction of blue laser to laryngology. Long-standing experience in minimally invasive phonomicrosurgery and office-based surgery. Presentations, workshops, instructional courses at international conferences. Memberships on various editorial boards and scientific committees. Authorship in over hundred peer-reviewed articles in professional journals and textbooks.

Dr. Nupur Kapoor Nerurkar is an ENT surgeon, who graduated in 1994 from KEM Hospital with a first rank in the Bombay University. Following her laryngology training in USA on the Hargobind fellowship in 2003, she is practicing exclusively as a laryngologist and is currently heading the Bombay Hospital Voice & Swallowing Center. Dr. Nerurkar is the DNB Co-ordinator of the ENT Department and Director of the Laryngology Fellowship program. She is Course Director of the Annual Phonosurgery Workshops being conducted at Bombay hospital since the past 17 years. Nupur is a past President of the Association of Phonosurgeons of India (APSI) and currently on the Governing Council. She is the Chief Editor of the “Textbook of Laryngology” which is the official APSI textbook and has authored an “Atlas of Phonomicrosurgery”. Nupur is a fellow of the American Laryngological Association, American Broncho-esophagological Association, Founder and Board member of the International Association of TransVoice Surgeons and Executive Committee member of the International Association of Phonosurgeons. She is focused in Phonomicrosurgery, Neurolaryngology, Laser surgeries for early glottic cancer and Pitch alteration surgeries.

Dr. Ramón González Herranz is an ENT specialist in voice pathology and the head of the Voice Unit at La Zarzuela University Hospital and Fuenlabrada University Hospital. He is the director of the “Talking About Voice” courses and the Phonosurgery Workshops at both centers. His professional activity focuses on phonosurgery, in-office procedures, and blue laser surgery, performed under both general and local anesthesia. He is a pioneer in various studies and research projects on voice pathology and its treatment, and he has extensive experience in the care and training of voice professionals.

Principal Investigator of the Voice Clinical Systems® for the biomedical approach to the study of the biomechanics of vocal folds. Professor Dr. of Human Anatomy and Embryology in the Department of Surgery, Medical, and Social Sciences at the Faculty of Medicine and Health Sciences, University of Alcalá. Specialist in vocal fold biomechanics, with research lines in biomechanics and physiology of the voice, voice pathology, clinical anatomy, anatomical technique and vocal fold biometrics. Contributions related to the described research lines: 11 research projects, more than 60 scientific publications in books and journals, over 50 contributions to conferences and scientific meetings, more than 100 courses taught, 3 records and patents related to voice studies, 2 research awards and 1 award for teaching excellence.