The societal perspective: monocular or bifocal? Presidential address.
Frakes
J T
JT
D016099:Endoscopy, Gastrointestinal / Q000266:history*; D005767:Gastrointestinal Diseases / Q000175:diagnosis / Q000266:history / Q000628:therapy; D049673:History, 20th Century; D006801:Humans; D012955:Societies, Medical / Q000266:history*; D014481:United States