den Herder Cindy, Schmeck Joachim, Appelboom Dick J K, de Vries Nico
Department of Otolaryngology/Head and Neck Surgery, St Lucas Andreas Hospital, Jan Tooropstraat 164, 1006 AE, Amsterdam, Netherlands.
BMJ. 2004 Oct 23;329(7472):955-9. doi: 10.1136/bmj.329.7472.955.