1. Kotakity M., Webb J.F., Dickerson J.W.T.: Some effects of a food supplement in elderly hospital patients: a longitudinal study. Hum.Nutr. Appl. Nutr. 37A: 85–93, 1983.
2. Warnold I., Lundholm K.: Clinical significance of preoperative nutritional status in 215 non-cancer patients. Ann. Surg. 139: 160–167, 1984.
3. A nutrition survey of the elderly. Department of Health and Social Security. Reports on Health and Social Subjects no. 3. Her Majesty’s Stationery Office, London, 1972.
4. Steen B., Isakkson B., Svanborg A.: Intake of energy and nutrients and meal habits in 70-year old males and females in Gothenburg, Sweden. A population study. Acta Med. Scand. (Suppl 611): 39-112, 1977.
5. Nutrition and health in old age. Department of Health and Social Security. Reports on Health and Social Subjects, no. 16. Her Majesty’s Stationery Office, London, 1979.