Razzaq, K., Khan, K. A., & Tariq, K. M. (2014). COMPARISON OF EFFICACY OF LIGNOCAINE ANESTHESIA OF VOCAL CORDS BY “SPRAY AS YOU GO” THROUGH A BRONCHOSCOPE WITH LIGNOCAINE INJECTION THROUGH THE CRICOTHYROID MEMBRANE: Lignocaine Anesthesia of Vocal Cords by “Spray As You Go. Pakistan Armed Forces Medical Journal, 64(2), 273-76. https://pafmj.org/PAFMJ/article/view/739