Tongue depressor.
Kravetz
Robert E
RE
Archives Committee, Americal College of Gastroenterology, USA.
D004867:Equipment Design / Q000266:history; D049670:History, 17th Century; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D009302:Nasopharyngeal Diseases / Q000175:diagnosis; D010808:Physical Examination / Q000266:history* / Q000295:instrumentation*