1. Upper esophageal sphincter and pharyngeal function and oropharyngeal (transfer) dysphagia;Castell;Gastroenterology Clinics of North America,1996
2. Aging-related alterations in human upper esophageal sphincter function;Fulp;American Journal of Gastroenterology,1990
3. The effects of age, sex, and smoking on normal pharyngoesophageal motility;Wilson;American Journal of Gastroenterology,1990
4. Altered swallowing function in elderly patients without dysphagia: radiologic findings in 56 cases;Ekberg;American Journal of Roentgenology,1991
5. Effect of aging and bolus variables on pharyngeal and upper esophageal sphincter motor function;Shaker;American Journal of Physiology,1993