Dr. Guzman is a voice pathologist with eighteen years of clinical and academic experience. He received his Ph.D. in Speech Techniques and Vocology from the Tampere University, Finland. He also holds a certification in vocology from the University of Iowa and National Center for Voice and Speech (USA). Dr. Guzman joined the faculty at the Universidad de los Andes, Department of Communication Sciences and Disorders in 2018 following a 15-year academic career at the University of Chile. He also works as a clinician in the Department of Otolaryngology, Las Condes Clinic, Chile. Moreover, He joined the Tampere University (Finland) as Adjunct Professor in 2018. Dr. Guzman is an active researcher and author of numerous scientific articles and book chapters related to the underling physiology of semi-occluded vocal tract exercises, physiologic voice therapy, and supraglottic constrictions during singing and speaking voice. Dr. Guzman is frequent speaker and lecturer at national and international meetings on topics related to assessment and management of voice disorders. He belongs to the editorial board of the Journal of Voice and to the Pan American Vocology association (PAVA) Advisory Board.