Real-time light-guided vocal fold injection: Clinical experience and technical pearls and pitfalls .ical 09-11, 17:30–18:00 (Europe/Istanbul), Laryngology 1 Wonjae CHA Prof. Wonjae Cha specializes in Head & Neck Cancer, Thyroid Cancer, and Laryngology. This speaker also appears in: Unilateral Vocal Fold Paralysis — From Early to Late Management Assessment, office-based and endolaryngeal approach for Unilateral Vocal Fold Immobilty