1. Positional otitis media;Duncan;Arch. Otolaryng.,1960
2. Disease of ear, nose and throat in children;Wilson,1955
3. Simple roentgenographic demonstration of eustachian tubes and abnormalities;Wittenborg;Amer. J. Roentgen.,1963
4. Wittenborg, M. H.: Personal communication.
5. New infant nursing bottle with angled-neck;Thornton;Postgrad. Med.,1964