Irjala, H., Matar, N., Remacle, M., & Lawson, G. (2011). Pharyngo-laryngeal examination with the narrow band imaging technology: early experience. European Archives of Oto-Rhino-Laryngology, 268(6), 801-806. https://doi.org/10.1007/s00405-011-1516-z (Original work published 2011)