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Pfeiffer, Julia B R; Mevissen, Meike; Steiner, Adrian; Portier, Christopher J; Meylan, Mireille (2007). In vitro effects of bethanechol on specimens of intestinal smooth muscle obtained from the duodenum and jejunum of healthy dairy cows. American journal of veterinary research, 68(3), pp. 313-22. Chicago, Ill.: American Veterinary Medical Association 10.2460/ajvr.68.3.313
