Birnstein, E.; Schattner, M. Surgical Oncology Clinics of North America (2017)
Harrison, L. E.; Fong, Y. In Rombeau, J. L.; Rolandelli, R. H. (Eds.) Clinical Nutrition: Enteral and Tube Feeding. 3rd ed (1997)
Bloch, A. S.; Brown, P. Journal of Pain and Symptom Management (1990)
Bloch, A. S. Dysphagia (1987)