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2. Demographics of pet ownership among US elderly;Marx;Anthrozoos,1987
3. Animal companions and one-year survival of patients after discharge from a coronary care unit;Friedman;Pub Health Reports,1980
4. Social interaction and blood pressure. Influence of companion animals;Friedman;J Nerv Ment Disease,1983
5. Looking, talking, and blood pressure: the physiological consequences of interaction with the living environment;Katcher,1983